646383780

素因数分解:

$2^2\times 3^3\times 5^1\times 7^1\times {\mathrm{271}}^1\times {\mathrm{631}}^1$

素因数の和:927

約数の個数: 192

約数和(自身を含む): 2310389760

約数和(自身を除く): 1664005980

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 35, 36, 42, 45, 54, 60, 63, 70, 84, 90, 105, 108, 126, 135, 140, 180, 189, 210, 252, 270, 271, 315, 378, 420, 540, 542, 630, 631, 756, 813, 945, 1084, 1260, 1262, 1355, 1626, 1890, 1893, 1897, 2439, 2524, 2710, 3155, 3252, 3780, 3786, 3794, 4065, 4417, 4878, 5420, 5679, 5691, 6310, 7317, 7572, 7588, 8130, 8834, 9465, 9485, 9756, 11358, 11382, 12195, 12620, 13251, 14634, 16260, 17037, 17073, 17668, 18930, 18970, 22085, 22716, 22764, 24390, 26502, 28395, 28455, 29268, 34074, 34146, 36585, 37860, 37940, 39753, 44170, 48780, 51219, 53004, 56790, 56910, 66255, 68148, 68292, 73170, 79506, 85185, 85365, 88340, 102438, 113580, 113820, 119259, 132510, 146340, 159012, 170370, 170730, 171001, 198765, 204876, 238518, 256095, 265020, 340740, 341460, 342002, 397530, 477036, 512190, 513003, 596295, 684004, 795060, 855005, 1024380, 1026006, 1192590, 1197007, 1539009, 1710010, 2052012, 2385180, 2394014, 2565015, 3078018, 3420020, 3591021, 4617027, 4788028, 5130030, 5985035, 6156036, 7182042, 7695045, 9234054, 10260060, 10773063, 11970070, 14364084, 15390090, 17955105, 18468108, 21546126, 23085135, 23940140, 30780180, 32319189, 35910210, 43092252, 46170270, 53865315, 64638378, 71820420, 92340540, 107730630, 129276756, 161595945, 215461260, 323191890, 646383780]

約数ペア:

[(1, 646383780), (2, 323191890), (3, 215461260), (4, 161595945), (5, 129276756), (6, 107730630), (7, 92340540), (9, 71820420), (10, 64638378), (12, 53865315), (14, 46170270), (15, 43092252), (18, 35910210), (20, 32319189), (21, 30780180), (27, 23940140), (28, 23085135), (30, 21546126), (35, 18468108), (36, 17955105), (42, 15390090), (45, 14364084), (54, 11970070), (60, 10773063), (63, 10260060), (70, 9234054), (84, 7695045), (90, 7182042), (105, 6156036), (108, 5985035), (126, 5130030), (135, 4788028), (140, 4617027), (180, 3591021), (189, 3420020), (210, 3078018), (252, 2565015), (270, 2394014), (271, 2385180), (315, 2052012), (378, 1710010), (420, 1539009), (540, 1197007), (542, 1192590), (630, 1026006), (631, 1024380), (756, 855005), (813, 795060), (945, 684004), (1084, 596295), (1260, 513003), (1262, 512190), (1355, 477036), (1626, 397530), (1890, 342002), (1893, 341460), (1897, 340740), (2439, 265020), (2524, 256095), (2710, 238518), (3155, 204876), (3252, 198765), (3780, 171001), (3786, 170730), (3794, 170370), (4065, 159012), (4417, 146340), (4878, 132510), (5420, 119259), (5679, 113820), (5691, 113580), (6310, 102438), (7317, 88340), (7572, 85365), (7588, 85185), (8130, 79506), (8834, 73170), (9465, 68292), (9485, 68148), (9756, 66255), (11358, 56910), (11382, 56790), (12195, 53004), (12620, 51219), (13251, 48780), (14634, 44170), (16260, 39753), (17037, 37940), (17073, 37860), (17668, 36585), (18930, 34146), (18970, 34074), (22085, 29268), (22716, 28455), (22764, 28395), (24390, 26502)]