1291288360

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{454679}}^1$

素因数の和:454761

約数の個数: 32

約数和(自身を含む): 2946326400

約数和(自身を除く): 1655038040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 454679, 909358, 1818716, 2273395, 3637432, 4546790, 9093580, 18187160, 32282209, 64564418, 129128836, 161411045, 258257672, 322822090, 645644180, 1291288360]

約数ペア:

[(1, 1291288360), (2, 645644180), (4, 322822090), (5, 258257672), (8, 161411045), (10, 129128836), (20, 64564418), (40, 32282209), (71, 18187160), (142, 9093580), (284, 4546790), (355, 3637432), (568, 2273395), (710, 1818716), (1420, 909358), (2840, 454679)]