20351500

素因数分解:

$2^2\times 5^3\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{101}}^1$

素因数の和:164

約数の個数: 96

約数和(自身を含む): 49900032

約数和(自身を除く): 29548532

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 31, 50, 52, 62, 65, 100, 101, 124, 125, 130, 155, 202, 250, 260, 310, 325, 403, 404, 500, 505, 620, 650, 775, 806, 1010, 1300, 1313, 1550, 1612, 1625, 2015, 2020, 2525, 2626, 3100, 3131, 3250, 3875, 4030, 5050, 5252, 6262, 6500, 6565, 7750, 8060, 10075, 10100, 12524, 12625, 13130, 15500, 15655, 20150, 25250, 26260, 31310, 32825, 40300, 40703, 50375, 50500, 62620, 65650, 78275, 81406, 100750, 131300, 156550, 162812, 164125, 201500, 203515, 313100, 328250, 391375, 407030, 656500, 782750, 814060, 1017575, 1565500, 2035150, 4070300, 5087875, 10175750, 20351500]

約数ペア:

[(1, 20351500), (2, 10175750), (4, 5087875), (5, 4070300), (10, 2035150), (13, 1565500), (20, 1017575), (25, 814060), (26, 782750), (31, 656500), (50, 407030), (52, 391375), (62, 328250), (65, 313100), (100, 203515), (101, 201500), (124, 164125), (125, 162812), (130, 156550), (155, 131300), (202, 100750), (250, 81406), (260, 78275), (310, 65650), (325, 62620), (403, 50500), (404, 50375), (500, 40703), (505, 40300), (620, 32825), (650, 31310), (775, 26260), (806, 25250), (1010, 20150), (1300, 15655), (1313, 15500), (1550, 13130), (1612, 12625), (1625, 12524), (2015, 10100), (2020, 10075), (2525, 8060), (2626, 7750), (3100, 6565), (3131, 6500), (3250, 6262), (3875, 5252), (4030, 5050)]