20120389900

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{379}}^1\times {\mathrm{421}}^1$

素因数の和:924

約数の個数: 144

約数和(自身を含む): 47743020640

約数和(自身を除く): 27622630740

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 97, 100, 130, 194, 260, 325, 379, 388, 421, 485, 650, 758, 842, 970, 1261, 1300, 1516, 1684, 1895, 1940, 2105, 2425, 2522, 3790, 4210, 4850, 4927, 5044, 5473, 6305, 7580, 8420, 9475, 9700, 9854, 10525, 10946, 12610, 18950, 19708, 21050, 21892, 24635, 25220, 27365, 31525, 36763, 37900, 40837, 42100, 49270, 54730, 63050, 73526, 81674, 98540, 109460, 123175, 126100, 136825, 147052, 159559, 163348, 183815, 204185, 246350, 273650, 319118, 367630, 408370, 477919, 492700, 530881, 547300, 638236, 735260, 797795, 816740, 919075, 955838, 1020925, 1061762, 1595590, 1838150, 1911676, 2041850, 2074267, 2123524, 2389595, 2654405, 3191180, 3676300, 3988975, 4083700, 4148534, 4779190, 5308810, 7977950, 8297068, 9558380, 10371335, 10617620, 11947975, 13272025, 15477223, 15955900, 20742670, 23895950, 26544050, 30954446, 41485340, 47791900, 51856675, 53088100, 61908892, 77386115, 103713350, 154772230, 201203899, 207426700, 309544460, 386930575, 402407798, 773861150, 804815596, 1006019495, 1547722300, 2012038990, 4024077980, 5030097475, 10060194950, 20120389900]

約数ペア:

[(1, 20120389900), (2, 10060194950), (4, 5030097475), (5, 4024077980), (10, 2012038990), (13, 1547722300), (20, 1006019495), (25, 804815596), (26, 773861150), (50, 402407798), (52, 386930575), (65, 309544460), (97, 207426700), (100, 201203899), (130, 154772230), (194, 103713350), (260, 77386115), (325, 61908892), (379, 53088100), (388, 51856675), (421, 47791900), (485, 41485340), (650, 30954446), (758, 26544050), (842, 23895950), (970, 20742670), (1261, 15955900), (1300, 15477223), (1516, 13272025), (1684, 11947975), (1895, 10617620), (1940, 10371335), (2105, 9558380), (2425, 8297068), (2522, 7977950), (3790, 5308810), (4210, 4779190), (4850, 4148534), (4927, 4083700), (5044, 3988975), (5473, 3676300), (6305, 3191180), (7580, 2654405), (8420, 2389595), (9475, 2123524), (9700, 2074267), (9854, 2041850), (10525, 1911676), (10946, 1838150), (12610, 1595590), (18950, 1061762), (19708, 1020925), (21050, 955838), (21892, 919075), (24635, 816740), (25220, 797795), (27365, 735260), (31525, 638236), (36763, 547300), (37900, 530881), (40837, 492700), (42100, 477919), (49270, 408370), (54730, 367630), (63050, 319118), (73526, 273650), (81674, 246350), (98540, 204185), (109460, 183815), (123175, 163348), (126100, 159559), (136825, 147052)]