20811570

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{73}}^1$

素因数の和:156

約数の個数: 128

約数和(自身を含む): 59076864

約数和(自身を除く): 38265294

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 17, 26, 30, 34, 39, 43, 51, 65, 73, 78, 85, 86, 102, 129, 130, 146, 170, 195, 215, 219, 221, 255, 258, 365, 390, 430, 438, 442, 510, 559, 645, 663, 730, 731, 949, 1095, 1105, 1118, 1241, 1290, 1326, 1462, 1677, 1898, 2190, 2193, 2210, 2482, 2795, 2847, 3139, 3315, 3354, 3655, 3723, 4386, 4745, 5590, 5694, 6205, 6278, 6630, 7310, 7446, 8385, 9417, 9490, 9503, 10965, 12410, 14235, 15695, 16133, 16770, 18615, 18834, 19006, 21930, 28470, 28509, 31390, 32266, 37230, 40807, 47085, 47515, 48399, 53363, 57018, 80665, 81614, 94170, 95030, 96798, 106726, 122421, 142545, 160089, 161330, 204035, 241995, 244842, 266815, 285090, 320178, 408070, 483990, 533630, 612105, 693719, 800445, 1224210, 1387438, 1600890, 2081157, 3468595, 4162314, 6937190, 10405785, 20811570]

約数ペア:

[(1, 20811570), (2, 10405785), (3, 6937190), (5, 4162314), (6, 3468595), (10, 2081157), (13, 1600890), (15, 1387438), (17, 1224210), (26, 800445), (30, 693719), (34, 612105), (39, 533630), (43, 483990), (51, 408070), (65, 320178), (73, 285090), (78, 266815), (85, 244842), (86, 241995), (102, 204035), (129, 161330), (130, 160089), (146, 142545), (170, 122421), (195, 106726), (215, 96798), (219, 95030), (221, 94170), (255, 81614), (258, 80665), (365, 57018), (390, 53363), (430, 48399), (438, 47515), (442, 47085), (510, 40807), (559, 37230), (645, 32266), (663, 31390), (730, 28509), (731, 28470), (949, 21930), (1095, 19006), (1105, 18834), (1118, 18615), (1241, 16770), (1290, 16133), (1326, 15695), (1462, 14235), (1677, 12410), (1898, 10965), (2190, 9503), (2193, 9490), (2210, 9417), (2482, 8385), (2795, 7446), (2847, 7310), (3139, 6630), (3315, 6278), (3354, 6205), (3655, 5694), (3723, 5590), (4386, 4745)]