18581992

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{439}}^1$

素因数の和:506

約数の個数: 64

約数和(自身を含む): 42134400

約数和(自身を除く): 23552408

約数列:

[1, 2, 4, 8, 11, 13, 22, 26, 37, 44, 52, 74, 88, 104, 143, 148, 286, 296, 407, 439, 481, 572, 814, 878, 962, 1144, 1628, 1756, 1924, 3256, 3512, 3848, 4829, 5291, 5707, 9658, 10582, 11414, 16243, 19316, 21164, 22828, 32486, 38632, 42328, 45656, 62777, 64972, 125554, 129944, 178673, 211159, 251108, 357346, 422318, 502216, 714692, 844636, 1429384, 1689272, 2322749, 4645498, 9290996, 18581992]

約数ペア:

[(1, 18581992), (2, 9290996), (4, 4645498), (8, 2322749), (11, 1689272), (13, 1429384), (22, 844636), (26, 714692), (37, 502216), (44, 422318), (52, 357346), (74, 251108), (88, 211159), (104, 178673), (143, 129944), (148, 125554), (286, 64972), (296, 62777), (407, 45656), (439, 42328), (481, 38632), (572, 32486), (814, 22828), (878, 21164), (962, 19316), (1144, 16243), (1628, 11414), (1756, 10582), (1924, 9658), (3256, 5707), (3512, 5291), (3848, 4829)]