71820420

素因数分解:

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

素因数の和:921

約数の個数: 96

約数和(自身を含む): 231038976

約数和(自身を除く): 159218556

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 271, 420, 542, 631, 813, 1084, 1262, 1355, 1626, 1893, 1897, 2524, 2710, 3155, 3252, 3786, 3794, 4065, 4417, 5420, 5691, 6310, 7572, 7588, 8130, 8834, 9465, 9485, 11382, 12620, 13251, 16260, 17668, 18930, 18970, 22085, 22764, 26502, 28455, 37860, 37940, 44170, 53004, 56910, 66255, 88340, 113820, 132510, 171001, 265020, 342002, 513003, 684004, 855005, 1026006, 1197007, 1710010, 2052012, 2394014, 2565015, 3420020, 3591021, 4788028, 5130030, 5985035, 7182042, 10260060, 11970070, 14364084, 17955105, 23940140, 35910210, 71820420]

約数ペア:

[(1, 71820420), (2, 35910210), (3, 23940140), (4, 17955105), (5, 14364084), (6, 11970070), (7, 10260060), (10, 7182042), (12, 5985035), (14, 5130030), (15, 4788028), (20, 3591021), (21, 3420020), (28, 2565015), (30, 2394014), (35, 2052012), (42, 1710010), (60, 1197007), (70, 1026006), (84, 855005), (105, 684004), (140, 513003), (210, 342002), (271, 265020), (420, 171001), (542, 132510), (631, 113820), (813, 88340), (1084, 66255), (1262, 56910), (1355, 53004), (1626, 44170), (1893, 37940), (1897, 37860), (2524, 28455), (2710, 26502), (3155, 22764), (3252, 22085), (3786, 18970), (3794, 18930), (4065, 17668), (4417, 16260), (5420, 13251), (5691, 12620), (6310, 11382), (7572, 9485), (7588, 9465), (8130, 8834)]