18942780

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{491}}^1\times {\mathrm{643}}^1$

素因数の和:1146

約数の個数: 48

約数和(自身を含む): 53230464

約数和(自身を除く): 34287684

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 491, 643, 982, 1286, 1473, 1929, 1964, 2455, 2572, 2946, 3215, 3858, 4910, 5892, 6430, 7365, 7716, 9645, 9820, 12860, 14730, 19290, 29460, 38580, 315713, 631426, 947139, 1262852, 1578565, 1894278, 3157130, 3788556, 4735695, 6314260, 9471390, 18942780]

約数ペア:

[(1, 18942780), (2, 9471390), (3, 6314260), (4, 4735695), (5, 3788556), (6, 3157130), (10, 1894278), (12, 1578565), (15, 1262852), (20, 947139), (30, 631426), (60, 315713), (491, 38580), (643, 29460), (982, 19290), (1286, 14730), (1473, 12860), (1929, 9820), (1964, 9645), (2455, 7716), (2572, 7365), (2946, 6430), (3215, 5892), (3858, 4910)]