21810464

素因数分解:

$2^5\times {\mathrm{13}}^2\times {\mathrm{37}}^1\times {\mathrm{109}}^1$

素因数の和:182

約数の個数: 72

約数和(自身を含む): 48191220

約数和(自身を除く): 26380756

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 37, 52, 74, 104, 109, 148, 169, 208, 218, 296, 338, 416, 436, 481, 592, 676, 872, 962, 1184, 1352, 1417, 1744, 1924, 2704, 2834, 3488, 3848, 4033, 5408, 5668, 6253, 7696, 8066, 11336, 12506, 15392, 16132, 18421, 22672, 25012, 32264, 36842, 45344, 50024, 52429, 64528, 73684, 100048, 104858, 129056, 147368, 200096, 209716, 294736, 419432, 589472, 681577, 838864, 1363154, 1677728, 2726308, 5452616, 10905232, 21810464]

約数ペア:

[(1, 21810464), (2, 10905232), (4, 5452616), (8, 2726308), (13, 1677728), (16, 1363154), (26, 838864), (32, 681577), (37, 589472), (52, 419432), (74, 294736), (104, 209716), (109, 200096), (148, 147368), (169, 129056), (208, 104858), (218, 100048), (296, 73684), (338, 64528), (416, 52429), (436, 50024), (481, 45344), (592, 36842), (676, 32264), (872, 25012), (962, 22672), (1184, 18421), (1352, 16132), (1417, 15392), (1744, 12506), (1924, 11336), (2704, 8066), (2834, 7696), (3488, 6253), (3848, 5668), (4033, 5408)]