19280140

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{31}}^1\times {\mathrm{257}}^1$

素因数の和:319

約数の個数: 72

約数和(自身を含む): 46118016

約数和(自身を除く): 26837876

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 31, 44, 55, 62, 110, 121, 124, 155, 220, 242, 257, 310, 341, 484, 514, 605, 620, 682, 1028, 1210, 1285, 1364, 1705, 2420, 2570, 2827, 3410, 3751, 5140, 5654, 6820, 7502, 7967, 11308, 14135, 15004, 15934, 18755, 28270, 31097, 31868, 37510, 39835, 56540, 62194, 75020, 79670, 87637, 124388, 155485, 159340, 175274, 310970, 350548, 438185, 621940, 876370, 964007, 1752740, 1928014, 3856028, 4820035, 9640070, 19280140]

約数ペア:

[(1, 19280140), (2, 9640070), (4, 4820035), (5, 3856028), (10, 1928014), (11, 1752740), (20, 964007), (22, 876370), (31, 621940), (44, 438185), (55, 350548), (62, 310970), (110, 175274), (121, 159340), (124, 155485), (155, 124388), (220, 87637), (242, 79670), (257, 75020), (310, 62194), (341, 56540), (484, 39835), (514, 37510), (605, 31868), (620, 31097), (682, 28270), (1028, 18755), (1210, 15934), (1285, 15004), (1364, 14135), (1705, 11308), (2420, 7967), (2570, 7502), (2827, 6820), (3410, 5654), (3751, 5140)]