291215860

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{36131}}^1$

素因数の和:36184

約数の個数: 48

約数和(自身を含む): 679859712

約数和(自身を除く): 388643852

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 31, 52, 62, 65, 124, 130, 155, 260, 310, 403, 620, 806, 1612, 2015, 4030, 8060, 36131, 72262, 144524, 180655, 361310, 469703, 722620, 939406, 1120061, 1878812, 2240122, 2348515, 4480244, 4697030, 5600305, 9394060, 11200610, 14560793, 22401220, 29121586, 58243172, 72803965, 145607930, 291215860]

約数ペア:

[(1, 291215860), (2, 145607930), (4, 72803965), (5, 58243172), (10, 29121586), (13, 22401220), (20, 14560793), (26, 11200610), (31, 9394060), (52, 5600305), (62, 4697030), (65, 4480244), (124, 2348515), (130, 2240122), (155, 1878812), (260, 1120061), (310, 939406), (403, 722620), (620, 469703), (806, 361310), (1612, 180655), (2015, 144524), (4030, 72262), (8060, 36131)]