18304880

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^2\times {\mathrm{31}}^1\times {\mathrm{61}}^1$

素因数の和:127

約数の個数: 120

約数和(自身を含む): 49080192

約数和(自身を除く): 30775312

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 31, 40, 44, 55, 61, 62, 80, 88, 110, 121, 122, 124, 155, 176, 220, 242, 244, 248, 305, 310, 341, 440, 484, 488, 496, 605, 610, 620, 671, 682, 880, 968, 976, 1210, 1220, 1240, 1342, 1364, 1705, 1891, 1936, 2420, 2440, 2480, 2684, 2728, 3355, 3410, 3751, 3782, 4840, 4880, 5368, 5456, 6710, 6820, 7381, 7502, 7564, 9455, 9680, 10736, 13420, 13640, 14762, 15004, 15128, 18755, 18910, 20801, 26840, 27280, 29524, 30008, 30256, 36905, 37510, 37820, 41602, 53680, 59048, 60016, 73810, 75020, 75640, 83204, 104005, 118096, 147620, 150040, 151280, 166408, 208010, 228811, 295240, 300080, 332816, 416020, 457622, 590480, 832040, 915244, 1144055, 1664080, 1830488, 2288110, 3660976, 4576220, 9152440, 18304880]

約数ペア:

[(1, 18304880), (2, 9152440), (4, 4576220), (5, 3660976), (8, 2288110), (10, 1830488), (11, 1664080), (16, 1144055), (20, 915244), (22, 832040), (31, 590480), (40, 457622), (44, 416020), (55, 332816), (61, 300080), (62, 295240), (80, 228811), (88, 208010), (110, 166408), (121, 151280), (122, 150040), (124, 147620), (155, 118096), (176, 104005), (220, 83204), (242, 75640), (244, 75020), (248, 73810), (305, 60016), (310, 59048), (341, 53680), (440, 41602), (484, 37820), (488, 37510), (496, 36905), (605, 30256), (610, 30008), (620, 29524), (671, 27280), (682, 26840), (880, 20801), (968, 18910), (976, 18755), (1210, 15128), (1220, 15004), (1240, 14762), (1342, 13640), (1364, 13420), (1705, 10736), (1891, 9680), (1936, 9455), (2420, 7564), (2440, 7502), (2480, 7381), (2684, 6820), (2728, 6710), (3355, 5456), (3410, 5368), (3751, 4880), (3782, 4840)]