21565336

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{6689}}^1$

素因数の和:6739

約数の個数: 32

約数和(自身を含む): 44956800

約数和(自身を除く): 23391464

約数列:

[1, 2, 4, 8, 13, 26, 31, 52, 62, 104, 124, 248, 403, 806, 1612, 3224, 6689, 13378, 26756, 53512, 86957, 173914, 207359, 347828, 414718, 695656, 829436, 1658872, 2695667, 5391334, 10782668, 21565336]

約数ペア:

[(1, 21565336), (2, 10782668), (4, 5391334), (8, 2695667), (13, 1658872), (26, 829436), (31, 695656), (52, 414718), (62, 347828), (104, 207359), (124, 173914), (248, 86957), (403, 53512), (806, 26756), (1612, 13378), (3224, 6689)]