247996280

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{28571}}^1$

素因数の和:28620

約数の個数: 64

約数和(自身を含む): 658298880

約数和(自身を除く): 410302600

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 31, 35, 40, 56, 62, 70, 124, 140, 155, 217, 248, 280, 310, 434, 620, 868, 1085, 1240, 1736, 2170, 4340, 8680, 28571, 57142, 114284, 142855, 199997, 228568, 285710, 399994, 571420, 799988, 885701, 999985, 1142840, 1599976, 1771402, 1999970, 3542804, 3999940, 4428505, 6199907, 7085608, 7999880, 8857010, 12399814, 17714020, 24799628, 30999535, 35428040, 49599256, 61999070, 123998140, 247996280]

約数ペア:

[(1, 247996280), (2, 123998140), (4, 61999070), (5, 49599256), (7, 35428040), (8, 30999535), (10, 24799628), (14, 17714020), (20, 12399814), (28, 8857010), (31, 7999880), (35, 7085608), (40, 6199907), (56, 4428505), (62, 3999940), (70, 3542804), (124, 1999970), (140, 1771402), (155, 1599976), (217, 1142840), (248, 999985), (280, 885701), (310, 799988), (434, 571420), (620, 399994), (868, 285710), (1085, 228568), (1240, 199997), (1736, 142855), (2170, 114284), (4340, 57142), (8680, 28571)]