15813980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{8689}}^1$

素因数の和:8718

約数の個数: 48

約数和(自身を含む): 40877760

約数和(自身を除く): 25063780

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 182, 260, 364, 455, 910, 1820, 8689, 17378, 34756, 43445, 60823, 86890, 112957, 121646, 173780, 225914, 243292, 304115, 451828, 564785, 608230, 790699, 1129570, 1216460, 1581398, 2259140, 3162796, 3953495, 7906990, 15813980]

約数ペア:

[(1, 15813980), (2, 7906990), (4, 3953495), (5, 3162796), (7, 2259140), (10, 1581398), (13, 1216460), (14, 1129570), (20, 790699), (26, 608230), (28, 564785), (35, 451828), (52, 304115), (65, 243292), (70, 225914), (91, 173780), (130, 121646), (140, 112957), (182, 86890), (260, 60823), (364, 43445), (455, 34756), (910, 17378), (1820, 8689)]