20512781575

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{149}}^1\times {\mathrm{397}}^1$

素因数の和:677

約数の個数: 96

約数和(自身を含む): 30469924800

約数和(自身を除く): 9957143225

約数列:

[1, 5, 11, 13, 25, 55, 65, 97, 143, 149, 275, 325, 397, 485, 715, 745, 1067, 1261, 1639, 1937, 1985, 2425, 3575, 3725, 4367, 5161, 5335, 6305, 8195, 9685, 9925, 13871, 14453, 21307, 21835, 25805, 26675, 31525, 38509, 40975, 48425, 56771, 59153, 69355, 72265, 106535, 109175, 129025, 158983, 187889, 192545, 283855, 295765, 346775, 361325, 423599, 500617, 532675, 650683, 768989, 794915, 939445, 962725, 1419275, 1478825, 2066779, 2117995, 2503085, 3253415, 3844945, 3974575, 4697225, 5506787, 5737841, 8458879, 10333895, 10589975, 12515425, 16267075, 19224725, 27533935, 28689205, 42294395, 51669475, 63116251, 74591933, 137669675, 143446025, 211471975, 315581255, 372959665, 820511263, 1577906275, 1864798325, 4102556315, 20512781575]

約数ペア:

[(1, 20512781575), (5, 4102556315), (11, 1864798325), (13, 1577906275), (25, 820511263), (55, 372959665), (65, 315581255), (97, 211471975), (143, 143446025), (149, 137669675), (275, 74591933), (325, 63116251), (397, 51669475), (485, 42294395), (715, 28689205), (745, 27533935), (1067, 19224725), (1261, 16267075), (1639, 12515425), (1937, 10589975), (1985, 10333895), (2425, 8458879), (3575, 5737841), (3725, 5506787), (4367, 4697225), (5161, 3974575), (5335, 3844945), (6305, 3253415), (8195, 2503085), (9685, 2117995), (9925, 2066779), (13871, 1478825), (14453, 1419275), (21307, 962725), (21835, 939445), (25805, 794915), (26675, 768989), (31525, 650683), (38509, 532675), (40975, 500617), (48425, 423599), (56771, 361325), (59153, 346775), (69355, 295765), (72265, 283855), (106535, 192545), (109175, 187889), (129025, 158983)]