20859540

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{569}}^1$

素因数の和:641

約数の個数: 96

約数和(自身を含む): 64350720

約数和(自身を除く): 43491180

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 47, 52, 60, 65, 78, 94, 130, 141, 156, 188, 195, 235, 260, 282, 390, 470, 564, 569, 611, 705, 780, 940, 1138, 1222, 1410, 1707, 1833, 2276, 2444, 2820, 2845, 3055, 3414, 3666, 5690, 6110, 6828, 7332, 7397, 8535, 9165, 11380, 12220, 14794, 17070, 18330, 22191, 26743, 29588, 34140, 36660, 36985, 44382, 53486, 73970, 80229, 88764, 106972, 110955, 133715, 147940, 160458, 221910, 267430, 320916, 347659, 401145, 443820, 534860, 695318, 802290, 1042977, 1390636, 1604580, 1738295, 2085954, 3476590, 4171908, 5214885, 6953180, 10429770, 20859540]

約数ペア:

[(1, 20859540), (2, 10429770), (3, 6953180), (4, 5214885), (5, 4171908), (6, 3476590), (10, 2085954), (12, 1738295), (13, 1604580), (15, 1390636), (20, 1042977), (26, 802290), (30, 695318), (39, 534860), (47, 443820), (52, 401145), (60, 347659), (65, 320916), (78, 267430), (94, 221910), (130, 160458), (141, 147940), (156, 133715), (188, 110955), (195, 106972), (235, 88764), (260, 80229), (282, 73970), (390, 53486), (470, 44382), (564, 36985), (569, 36660), (611, 34140), (705, 29588), (780, 26743), (940, 22191), (1138, 18330), (1222, 17070), (1410, 14794), (1707, 12220), (1833, 11380), (2276, 9165), (2444, 8535), (2820, 7397), (2845, 7332), (3055, 6828), (3414, 6110), (3666, 5690)]