18451840

素因数分解:

$2^7\times 5^1\times {\mathrm{11}}^1\times {\mathrm{2621}}^1$

素因数の和:2651

約数の個数: 64

約数和(自身を含む): 48139920

約数和(自身を除く): 29688080

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 64, 80, 88, 110, 128, 160, 176, 220, 320, 352, 440, 640, 704, 880, 1408, 1760, 2621, 3520, 5242, 7040, 10484, 13105, 20968, 26210, 28831, 41936, 52420, 57662, 83872, 104840, 115324, 144155, 167744, 209680, 230648, 288310, 335488, 419360, 461296, 576620, 838720, 922592, 1153240, 1677440, 1845184, 2306480, 3690368, 4612960, 9225920, 18451840]

約数ペア:

[(1, 18451840), (2, 9225920), (4, 4612960), (5, 3690368), (8, 2306480), (10, 1845184), (11, 1677440), (16, 1153240), (20, 922592), (22, 838720), (32, 576620), (40, 461296), (44, 419360), (55, 335488), (64, 288310), (80, 230648), (88, 209680), (110, 167744), (128, 144155), (160, 115324), (176, 104840), (220, 83872), (320, 57662), (352, 52420), (440, 41936), (640, 28831), (704, 26210), (880, 20968), (1408, 13105), (1760, 10484), (2621, 7040), (3520, 5242)]