20778420

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1567}}^1$

素因数の和:1609

約数の個数: 96

約数和(自身を含む): 66382848

約数和(自身を除く): 45604428

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 17, 20, 26, 30, 34, 39, 51, 52, 60, 65, 68, 78, 85, 102, 130, 156, 170, 195, 204, 221, 255, 260, 340, 390, 442, 510, 663, 780, 884, 1020, 1105, 1326, 1567, 2210, 2652, 3134, 3315, 4420, 4701, 6268, 6630, 7835, 9402, 13260, 15670, 18804, 20371, 23505, 26639, 31340, 40742, 47010, 53278, 61113, 79917, 81484, 94020, 101855, 106556, 122226, 133195, 159834, 203710, 244452, 266390, 305565, 319668, 346307, 399585, 407420, 532780, 611130, 692614, 799170, 1038921, 1222260, 1385228, 1598340, 1731535, 2077842, 3463070, 4155684, 5194605, 6926140, 10389210, 20778420]

約数ペア:

[(1, 20778420), (2, 10389210), (3, 6926140), (4, 5194605), (5, 4155684), (6, 3463070), (10, 2077842), (12, 1731535), (13, 1598340), (15, 1385228), (17, 1222260), (20, 1038921), (26, 799170), (30, 692614), (34, 611130), (39, 532780), (51, 407420), (52, 399585), (60, 346307), (65, 319668), (68, 305565), (78, 266390), (85, 244452), (102, 203710), (130, 159834), (156, 133195), (170, 122226), (195, 106556), (204, 101855), (221, 94020), (255, 81484), (260, 79917), (340, 61113), (390, 53278), (442, 47010), (510, 40742), (663, 31340), (780, 26639), (884, 23505), (1020, 20371), (1105, 18804), (1326, 15670), (1567, 13260), (2210, 9402), (2652, 7835), (3134, 6630), (3315, 6268), (4420, 4701)]