16231820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{829}}^1$

素因数の和:938

約数の個数: 48

約数和(自身を含む): 37648800

約数和(自身を除く): 21416980

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 89, 110, 178, 220, 356, 445, 829, 890, 979, 1658, 1780, 1958, 3316, 3916, 4145, 4895, 8290, 9119, 9790, 16580, 18238, 19580, 36476, 45595, 73781, 91190, 147562, 182380, 295124, 368905, 737810, 811591, 1475620, 1623182, 3246364, 4057955, 8115910, 16231820]

約数ペア:

[(1, 16231820), (2, 8115910), (4, 4057955), (5, 3246364), (10, 1623182), (11, 1475620), (20, 811591), (22, 737810), (44, 368905), (55, 295124), (89, 182380), (110, 147562), (178, 91190), (220, 73781), (356, 45595), (445, 36476), (829, 19580), (890, 18238), (979, 16580), (1658, 9790), (1780, 9119), (1958, 8290), (3316, 4895), (3916, 4145)]