19911760

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^4\times {\mathrm{17}}^1$

素因数の和:74

約数の個数: 100

約数和(自身を含む): 53919540

約数和(自身を除く): 34007780

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 17, 20, 22, 34, 40, 44, 55, 68, 80, 85, 88, 110, 121, 136, 170, 176, 187, 220, 242, 272, 340, 374, 440, 484, 605, 680, 748, 880, 935, 968, 1210, 1331, 1360, 1496, 1870, 1936, 2057, 2420, 2662, 2992, 3740, 4114, 4840, 5324, 6655, 7480, 8228, 9680, 10285, 10648, 13310, 14641, 14960, 16456, 20570, 21296, 22627, 26620, 29282, 32912, 41140, 45254, 53240, 58564, 73205, 82280, 90508, 106480, 113135, 117128, 146410, 164560, 181016, 226270, 234256, 248897, 292820, 362032, 452540, 497794, 585640, 905080, 995588, 1171280, 1244485, 1810160, 1991176, 2488970, 3982352, 4977940, 9955880, 19911760]

約数ペア:

[(1, 19911760), (2, 9955880), (4, 4977940), (5, 3982352), (8, 2488970), (10, 1991176), (11, 1810160), (16, 1244485), (17, 1171280), (20, 995588), (22, 905080), (34, 585640), (40, 497794), (44, 452540), (55, 362032), (68, 292820), (80, 248897), (85, 234256), (88, 226270), (110, 181016), (121, 164560), (136, 146410), (170, 117128), (176, 113135), (187, 106480), (220, 90508), (242, 82280), (272, 73205), (340, 58564), (374, 53240), (440, 45254), (484, 41140), (605, 32912), (680, 29282), (748, 26620), (880, 22627), (935, 21296), (968, 20570), (1210, 16456), (1331, 14960), (1360, 14641), (1496, 13310), (1870, 10648), (1936, 10285), (2057, 9680), (2420, 8228), (2662, 7480), (2992, 6655), (3740, 5324), (4114, 4840)]