211311765

素因数分解:

$3^2\times 5^1\times 7^2\times {\mathrm{47}}^1\times {\mathrm{2039}}^1$

素因数の和:2111

約数の個数: 72

約数和(自身を含む): 435352320

約数和(自身を除く): 224040555

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 47, 49, 63, 105, 141, 147, 235, 245, 315, 329, 423, 441, 705, 735, 987, 1645, 2039, 2115, 2205, 2303, 2961, 4935, 6117, 6909, 10195, 11515, 14273, 14805, 18351, 20727, 30585, 34545, 42819, 71365, 91755, 95833, 99911, 103635, 128457, 214095, 287499, 299733, 479165, 499555, 642285, 670831, 862497, 899199, 1437495, 1498665, 2012493, 3354155, 4312485, 4495995, 4695817, 6037479, 10062465, 14087451, 23479085, 30187395, 42262353, 70437255, 211311765]

約数ペア:

[(1, 211311765), (3, 70437255), (5, 42262353), (7, 30187395), (9, 23479085), (15, 14087451), (21, 10062465), (35, 6037479), (45, 4695817), (47, 4495995), (49, 4312485), (63, 3354155), (105, 2012493), (141, 1498665), (147, 1437495), (235, 899199), (245, 862497), (315, 670831), (329, 642285), (423, 499555), (441, 479165), (705, 299733), (735, 287499), (987, 214095), (1645, 128457), (2039, 103635), (2115, 99911), (2205, 95833), (2303, 91755), (2961, 71365), (4935, 42819), (6117, 34545), (6909, 30585), (10195, 20727), (11515, 18351), (14273, 14805)]