258706660

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{5197}}^1$

素因数の和:5356

約数の個数: 48

約数和(自身を含む): 576354240

約数和(自身を除く): 317647580

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 131, 190, 262, 380, 524, 655, 1310, 2489, 2620, 4978, 5197, 9956, 10394, 12445, 20788, 24890, 25985, 49780, 51970, 98743, 103940, 197486, 394972, 493715, 680807, 987430, 1361614, 1974860, 2723228, 3404035, 6808070, 12935333, 13616140, 25870666, 51741332, 64676665, 129353330, 258706660]

約数ペア:

[(1, 258706660), (2, 129353330), (4, 64676665), (5, 51741332), (10, 25870666), (19, 13616140), (20, 12935333), (38, 6808070), (76, 3404035), (95, 2723228), (131, 1974860), (190, 1361614), (262, 987430), (380, 680807), (524, 493715), (655, 394972), (1310, 197486), (2489, 103940), (2620, 98743), (4978, 51970), (5197, 49780), (9956, 25985), (10394, 24890), (12445, 20788)]