291713720

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{5471}}^1$

素因数の和:5556

約数の個数: 64

約数和(自身を含む): 693411840

約数和(自身を除く): 401698120

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 43, 62, 86, 124, 155, 172, 215, 248, 310, 344, 430, 620, 860, 1240, 1333, 1720, 2666, 5332, 5471, 6665, 10664, 10942, 13330, 21884, 26660, 27355, 43768, 53320, 54710, 109420, 169601, 218840, 235253, 339202, 470506, 678404, 848005, 941012, 1176265, 1356808, 1696010, 1882024, 2352530, 3392020, 4705060, 6784040, 7292843, 9410120, 14585686, 29171372, 36464215, 58342744, 72928430, 145856860, 291713720]

約数ペア:

[(1, 291713720), (2, 145856860), (4, 72928430), (5, 58342744), (8, 36464215), (10, 29171372), (20, 14585686), (31, 9410120), (40, 7292843), (43, 6784040), (62, 4705060), (86, 3392020), (124, 2352530), (155, 1882024), (172, 1696010), (215, 1356808), (248, 1176265), (310, 941012), (344, 848005), (430, 678404), (620, 470506), (860, 339202), (1240, 235253), (1333, 218840), (1720, 169601), (2666, 109420), (5332, 54710), (5471, 53320), (6665, 43768), (10664, 27355), (10942, 26660), (13330, 21884)]