20121850420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{17}}^2\times {\mathrm{211}}^1\times {\mathrm{2357}}^1$

素因数の和:2618

約数の個数: 144

約数和(自身を含む): 51565272192

約数和(自身を除く): 31443421772

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 20, 28, 34, 35, 68, 70, 85, 119, 140, 170, 211, 238, 289, 340, 422, 476, 578, 595, 844, 1055, 1156, 1190, 1445, 1477, 2023, 2110, 2357, 2380, 2890, 2954, 3587, 4046, 4220, 4714, 5780, 5908, 7174, 7385, 8092, 9428, 10115, 11785, 14348, 14770, 16499, 17935, 20230, 23570, 25109, 29540, 32998, 35870, 40069, 40460, 47140, 50218, 60979, 65996, 71740, 80138, 82495, 100436, 121958, 125545, 160276, 164990, 200345, 243916, 251090, 280483, 304895, 329980, 400690, 426853, 497327, 502180, 560966, 609790, 681173, 801380, 853706, 994654, 1121932, 1219580, 1362346, 1402415, 1707412, 1989308, 2134265, 2486635, 2724692, 2804830, 3405865, 3481289, 4268530, 4768211, 4973270, 5609660, 6811730, 6962578, 8454559, 8537060, 9536422, 9946540, 13623460, 13925156, 16909118, 17406445, 19072844, 23841055, 33818236, 34812890, 42272795, 47682110, 59181913, 69625780, 84545590, 95364220, 118363826, 143727503, 169091180, 236727652, 287455006, 295909565, 574910012, 591819130, 718637515, 1006092521, 1183638260, 1437275030, 2012185042, 2874550060, 4024370084, 5030462605, 10060925210, 20121850420]

約数ペア:

[(1, 20121850420), (2, 10060925210), (4, 5030462605), (5, 4024370084), (7, 2874550060), (10, 2012185042), (14, 1437275030), (17, 1183638260), (20, 1006092521), (28, 718637515), (34, 591819130), (35, 574910012), (68, 295909565), (70, 287455006), (85, 236727652), (119, 169091180), (140, 143727503), (170, 118363826), (211, 95364220), (238, 84545590), (289, 69625780), (340, 59181913), (422, 47682110), (476, 42272795), (578, 34812890), (595, 33818236), (844, 23841055), (1055, 19072844), (1156, 17406445), (1190, 16909118), (1445, 13925156), (1477, 13623460), (2023, 9946540), (2110, 9536422), (2357, 8537060), (2380, 8454559), (2890, 6962578), (2954, 6811730), (3587, 5609660), (4046, 4973270), (4220, 4768211), (4714, 4268530), (5780, 3481289), (5908, 3405865), (7174, 2804830), (7385, 2724692), (8092, 2486635), (9428, 2134265), (10115, 1989308), (11785, 1707412), (14348, 1402415), (14770, 1362346), (16499, 1219580), (17935, 1121932), (20230, 994654), (23570, 853706), (25109, 801380), (29540, 681173), (32998, 609790), (35870, 560966), (40069, 502180), (40460, 497327), (47140, 426853), (50218, 400690), (60979, 329980), (65996, 304895), (71740, 280483), (80138, 251090), (82495, 243916), (100436, 200345), (121958, 164990), (125545, 160276)]