18961460

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{257}}^1$

素因数の和:321

約数の個数: 96

約数和(自身を含む): 49932288

約数和(自身を除く): 30970828

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 20, 28, 31, 34, 35, 62, 68, 70, 85, 119, 124, 140, 155, 170, 217, 238, 257, 310, 340, 434, 476, 514, 527, 595, 620, 868, 1028, 1054, 1085, 1190, 1285, 1799, 2108, 2170, 2380, 2570, 2635, 3598, 3689, 4340, 4369, 5140, 5270, 7196, 7378, 7967, 8738, 8995, 10540, 14756, 15934, 17476, 17990, 18445, 21845, 30583, 31868, 35980, 36890, 39835, 43690, 55769, 61166, 73780, 79670, 87380, 111538, 122332, 135439, 152915, 159340, 223076, 270878, 278845, 305830, 541756, 557690, 611660, 677195, 948073, 1115380, 1354390, 1896146, 2708780, 3792292, 4740365, 9480730, 18961460]

約数ペア:

[(1, 18961460), (2, 9480730), (4, 4740365), (5, 3792292), (7, 2708780), (10, 1896146), (14, 1354390), (17, 1115380), (20, 948073), (28, 677195), (31, 611660), (34, 557690), (35, 541756), (62, 305830), (68, 278845), (70, 270878), (85, 223076), (119, 159340), (124, 152915), (140, 135439), (155, 122332), (170, 111538), (217, 87380), (238, 79670), (257, 73780), (310, 61166), (340, 55769), (434, 43690), (476, 39835), (514, 36890), (527, 35980), (595, 31868), (620, 30583), (868, 21845), (1028, 18445), (1054, 17990), (1085, 17476), (1190, 15934), (1285, 14756), (1799, 10540), (2108, 8995), (2170, 8738), (2380, 7967), (2570, 7378), (2635, 7196), (3598, 5270), (3689, 5140), (4340, 4369)]