31471700

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{563}}^1$

素因数の和:633

約数の個数: 72

約数和(自身を含む): 75391008

約数和(自身を除く): 43919308

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 43, 50, 52, 65, 86, 100, 130, 172, 215, 260, 325, 430, 559, 563, 650, 860, 1075, 1118, 1126, 1300, 2150, 2236, 2252, 2795, 2815, 4300, 5590, 5630, 7319, 11180, 11260, 13975, 14075, 14638, 24209, 27950, 28150, 29276, 36595, 48418, 55900, 56300, 73190, 96836, 121045, 146380, 182975, 242090, 314717, 365950, 484180, 605225, 629434, 731900, 1210450, 1258868, 1573585, 2420900, 3147170, 6294340, 7867925, 15735850, 31471700]

約数ペア:

[(1, 31471700), (2, 15735850), (4, 7867925), (5, 6294340), (10, 3147170), (13, 2420900), (20, 1573585), (25, 1258868), (26, 1210450), (43, 731900), (50, 629434), (52, 605225), (65, 484180), (86, 365950), (100, 314717), (130, 242090), (172, 182975), (215, 146380), (260, 121045), (325, 96836), (430, 73190), (559, 56300), (563, 55900), (650, 48418), (860, 36595), (1075, 29276), (1118, 28150), (1126, 27950), (1300, 24209), (2150, 14638), (2236, 14075), (2252, 13975), (2795, 11260), (2815, 11180), (4300, 7319), (5590, 5630)]