21160515

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{619}}^1$

素因数の和:723

約数の個数: 32

約数和(自身を含む): 35354880

約数和(自身を除く): 14194365

約数列:

[1, 3, 5, 15, 43, 53, 129, 159, 215, 265, 619, 645, 795, 1857, 2279, 3095, 6837, 9285, 11395, 26617, 32807, 34185, 79851, 98421, 133085, 164035, 399255, 492105, 1410701, 4232103, 7053505, 21160515]

約数ペア:

[(1, 21160515), (3, 7053505), (5, 4232103), (15, 1410701), (43, 492105), (53, 399255), (129, 164035), (159, 133085), (215, 98421), (265, 79851), (619, 34185), (645, 32807), (795, 26617), (1857, 11395), (2279, 9285), (3095, 6837)]