16988440

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{83}}^1$

素因数の和:161

約数の個数: 128

約数和(自身を含む): 47900160

約数和(自身を除く): 30911720

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 17, 20, 28, 34, 35, 40, 43, 56, 68, 70, 83, 85, 86, 119, 136, 140, 166, 170, 172, 215, 238, 280, 301, 332, 340, 344, 415, 430, 476, 581, 595, 602, 664, 680, 731, 830, 860, 952, 1162, 1190, 1204, 1411, 1462, 1505, 1660, 1720, 2324, 2380, 2408, 2822, 2905, 2924, 3010, 3320, 3569, 3655, 4648, 4760, 5117, 5644, 5810, 5848, 6020, 7055, 7138, 7310, 9877, 10234, 11288, 11620, 12040, 14110, 14276, 14620, 17845, 19754, 20468, 23240, 24983, 25585, 28220, 28552, 29240, 35690, 39508, 40936, 49385, 49966, 51170, 56440, 60673, 71380, 79016, 98770, 99932, 102340, 121346, 124915, 142760, 197540, 199864, 204680, 242692, 249830, 303365, 395080, 424711, 485384, 499660, 606730, 849422, 999320, 1213460, 1698844, 2123555, 2426920, 3397688, 4247110, 8494220, 16988440]

約数ペア:

[(1, 16988440), (2, 8494220), (4, 4247110), (5, 3397688), (7, 2426920), (8, 2123555), (10, 1698844), (14, 1213460), (17, 999320), (20, 849422), (28, 606730), (34, 499660), (35, 485384), (40, 424711), (43, 395080), (56, 303365), (68, 249830), (70, 242692), (83, 204680), (85, 199864), (86, 197540), (119, 142760), (136, 124915), (140, 121346), (166, 102340), (170, 99932), (172, 98770), (215, 79016), (238, 71380), (280, 60673), (301, 56440), (332, 51170), (340, 49966), (344, 49385), (415, 40936), (430, 39508), (476, 35690), (581, 29240), (595, 28552), (602, 28220), (664, 25585), (680, 24983), (731, 23240), (830, 20468), (860, 19754), (952, 17845), (1162, 14620), (1190, 14276), (1204, 14110), (1411, 12040), (1462, 11620), (1505, 11288), (1660, 10234), (1720, 9877), (2324, 7310), (2380, 7138), (2408, 7055), (2822, 6020), (2905, 5848), (2924, 5810), (3010, 5644), (3320, 5117), (3569, 4760), (3655, 4648)]