20663500

素因数分解:

$2^2\times 5^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^2$

素因数の和:77

約数の個数: 144

約数和(自身を含む): 56320992

約数和(自身を除く): 35657492

約数列:

[1, 2, 4, 5, 10, 11, 13, 17, 20, 22, 25, 26, 34, 44, 50, 52, 55, 65, 68, 85, 100, 110, 125, 130, 143, 170, 187, 220, 221, 250, 260, 275, 286, 289, 325, 340, 374, 425, 442, 500, 550, 572, 578, 650, 715, 748, 850, 884, 935, 1100, 1105, 1156, 1300, 1375, 1430, 1445, 1625, 1700, 1870, 2125, 2210, 2431, 2750, 2860, 2890, 3179, 3250, 3575, 3740, 3757, 4250, 4420, 4675, 4862, 5500, 5525, 5780, 6358, 6500, 7150, 7225, 7514, 8500, 9350, 9724, 11050, 12155, 12716, 14300, 14450, 15028, 15895, 17875, 18700, 18785, 22100, 23375, 24310, 27625, 28900, 31790, 35750, 36125, 37570, 41327, 46750, 48620, 55250, 60775, 63580, 71500, 72250, 75140, 79475, 82654, 93500, 93925, 110500, 121550, 144500, 158950, 165308, 187850, 206635, 243100, 303875, 317900, 375700, 397375, 413270, 469625, 607750, 794750, 826540, 939250, 1033175, 1215500, 1589500, 1878500, 2066350, 4132700, 5165875, 10331750, 20663500]

約数ペア:

[(1, 20663500), (2, 10331750), (4, 5165875), (5, 4132700), (10, 2066350), (11, 1878500), (13, 1589500), (17, 1215500), (20, 1033175), (22, 939250), (25, 826540), (26, 794750), (34, 607750), (44, 469625), (50, 413270), (52, 397375), (55, 375700), (65, 317900), (68, 303875), (85, 243100), (100, 206635), (110, 187850), (125, 165308), (130, 158950), (143, 144500), (170, 121550), (187, 110500), (220, 93925), (221, 93500), (250, 82654), (260, 79475), (275, 75140), (286, 72250), (289, 71500), (325, 63580), (340, 60775), (374, 55250), (425, 48620), (442, 46750), (500, 41327), (550, 37570), (572, 36125), (578, 35750), (650, 31790), (715, 28900), (748, 27625), (850, 24310), (884, 23375), (935, 22100), (1100, 18785), (1105, 18700), (1156, 17875), (1300, 15895), (1375, 15028), (1430, 14450), (1445, 14300), (1625, 12716), (1700, 12155), (1870, 11050), (2125, 9724), (2210, 9350), (2431, 8500), (2750, 7514), (2860, 7225), (2890, 7150), (3179, 6500), (3250, 6358), (3575, 5780), (3740, 5525), (3757, 5500), (4250, 4862), (4420, 4675)]