20123686100

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{449}}^1\times {\mathrm{1489}}^1$

素因数の和:2002

約数の個数: 144

約数和(自身を含む): 51215472000

約数和(自身を除く): 31091785900

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 43, 50, 70, 86, 100, 140, 172, 175, 215, 301, 350, 430, 449, 602, 700, 860, 898, 1075, 1204, 1489, 1505, 1796, 2150, 2245, 2978, 3010, 3143, 4300, 4490, 5956, 6020, 6286, 7445, 7525, 8980, 10423, 11225, 12572, 14890, 15050, 15715, 19307, 20846, 22450, 29780, 30100, 31430, 37225, 38614, 41692, 44900, 52115, 62860, 64027, 74450, 77228, 78575, 96535, 104230, 128054, 135149, 148900, 157150, 193070, 208460, 256108, 260575, 270298, 314300, 320135, 386140, 448189, 482675, 521150, 540596, 640270, 668561, 675745, 896378, 965350, 1042300, 1280540, 1337122, 1351490, 1600675, 1792756, 1930700, 2240945, 2674244, 2702980, 3201350, 3342805, 3378725, 4481890, 4679927, 6402700, 6685610, 6757450, 8963780, 9359854, 11204725, 13371220, 13514900, 16714025, 18719708, 22409450, 23399635, 28748123, 33428050, 44818900, 46799270, 57496246, 66856100, 93598540, 114992492, 116998175, 143740615, 201236861, 233996350, 287481230, 402473722, 467992700, 574962460, 718703075, 804947444, 1006184305, 1437406150, 2012368610, 2874812300, 4024737220, 5030921525, 10061843050, 20123686100]

約数ペア:

[(1, 20123686100), (2, 10061843050), (4, 5030921525), (5, 4024737220), (7, 2874812300), (10, 2012368610), (14, 1437406150), (20, 1006184305), (25, 804947444), (28, 718703075), (35, 574962460), (43, 467992700), (50, 402473722), (70, 287481230), (86, 233996350), (100, 201236861), (140, 143740615), (172, 116998175), (175, 114992492), (215, 93598540), (301, 66856100), (350, 57496246), (430, 46799270), (449, 44818900), (602, 33428050), (700, 28748123), (860, 23399635), (898, 22409450), (1075, 18719708), (1204, 16714025), (1489, 13514900), (1505, 13371220), (1796, 11204725), (2150, 9359854), (2245, 8963780), (2978, 6757450), (3010, 6685610), (3143, 6402700), (4300, 4679927), (4490, 4481890), (5956, 3378725), (6020, 3342805), (6286, 3201350), (7445, 2702980), (7525, 2674244), (8980, 2240945), (10423, 1930700), (11225, 1792756), (12572, 1600675), (14890, 1351490), (15050, 1337122), (15715, 1280540), (19307, 1042300), (20846, 965350), (22450, 896378), (29780, 675745), (30100, 668561), (31430, 640270), (37225, 540596), (38614, 521150), (41692, 482675), (44900, 448189), (52115, 386140), (62860, 320135), (64027, 314300), (74450, 270298), (77228, 260575), (78575, 256108), (96535, 208460), (104230, 193070), (128054, 157150), (135149, 148900)]