1290758980

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{653}}^1\times {\mathrm{2017}}^1$

素因数の和:2693

約数の個数: 72

約数和(自身を含む): 3159534168

約数和(自身を除く): 1868775188

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 653, 980, 1306, 2017, 2612, 3265, 4034, 4571, 6530, 8068, 9142, 10085, 13060, 14119, 18284, 20170, 22855, 28238, 31997, 40340, 45710, 56476, 63994, 70595, 91420, 98833, 127988, 141190, 159985, 197666, 282380, 319970, 395332, 494165, 639940, 988330, 1317101, 1976660, 2634202, 5268404, 6585505, 9219707, 13171010, 18439414, 26342020, 36878828, 46098535, 64537949, 92197070, 129075898, 184394140, 258151796, 322689745, 645379490, 1290758980]

約数ペア:

[(1, 1290758980), (2, 645379490), (4, 322689745), (5, 258151796), (7, 184394140), (10, 129075898), (14, 92197070), (20, 64537949), (28, 46098535), (35, 36878828), (49, 26342020), (70, 18439414), (98, 13171010), (140, 9219707), (196, 6585505), (245, 5268404), (490, 2634202), (653, 1976660), (980, 1317101), (1306, 988330), (2017, 639940), (2612, 494165), (3265, 395332), (4034, 319970), (4571, 282380), (6530, 197666), (8068, 159985), (9142, 141190), (10085, 127988), (13060, 98833), (14119, 91420), (18284, 70595), (20170, 63994), (22855, 56476), (28238, 45710), (31997, 40340)]