19911320

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{59}}^2$

素因数の和:153

約数の個数: 96

約数和(自身を含む): 53539920

約数和(自身を除く): 33628600

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 20, 22, 26, 40, 44, 52, 55, 59, 65, 88, 104, 110, 118, 130, 143, 220, 236, 260, 286, 295, 440, 472, 520, 572, 590, 649, 715, 767, 1144, 1180, 1298, 1430, 1534, 2360, 2596, 2860, 3068, 3245, 3481, 3835, 5192, 5720, 6136, 6490, 6962, 7670, 8437, 12980, 13924, 15340, 16874, 17405, 25960, 27848, 30680, 33748, 34810, 38291, 42185, 45253, 67496, 69620, 76582, 84370, 90506, 139240, 153164, 168740, 181012, 191455, 226265, 306328, 337480, 362024, 382910, 452530, 497783, 765820, 905060, 995566, 1531640, 1810120, 1991132, 2488915, 3982264, 4977830, 9955660, 19911320]

約数ペア:

[(1, 19911320), (2, 9955660), (4, 4977830), (5, 3982264), (8, 2488915), (10, 1991132), (11, 1810120), (13, 1531640), (20, 995566), (22, 905060), (26, 765820), (40, 497783), (44, 452530), (52, 382910), (55, 362024), (59, 337480), (65, 306328), (88, 226265), (104, 191455), (110, 181012), (118, 168740), (130, 153164), (143, 139240), (220, 90506), (236, 84370), (260, 76582), (286, 69620), (295, 67496), (440, 45253), (472, 42185), (520, 38291), (572, 34810), (590, 33748), (649, 30680), (715, 27848), (767, 25960), (1144, 17405), (1180, 16874), (1298, 15340), (1430, 13924), (1534, 12980), (2360, 8437), (2596, 7670), (2860, 6962), (3068, 6490), (3245, 6136), (3481, 5720), (3835, 5192)]