21437960

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{18481}}^1$

素因数の和:18521

約数の個数: 32

約数和(自身を含む): 49901400

約数和(自身を除く): 28463440

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 116, 145, 232, 290, 580, 1160, 18481, 36962, 73924, 92405, 147848, 184810, 369620, 535949, 739240, 1071898, 2143796, 2679745, 4287592, 5359490, 10718980, 21437960]

約数ペア:

[(1, 21437960), (2, 10718980), (4, 5359490), (5, 4287592), (8, 2679745), (10, 2143796), (20, 1071898), (29, 739240), (40, 535949), (58, 369620), (116, 184810), (145, 147848), (232, 92405), (290, 73924), (580, 36962), (1160, 18481)]