649726420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{149}}^1\times {\mathrm{31147}}^1$

素因数の和:31312

約数の個数: 48

約数和(自身を含む): 1569859200

約数和(自身を除く): 920132780

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 149, 298, 596, 745, 1043, 1490, 2086, 2980, 4172, 5215, 10430, 20860, 31147, 62294, 124588, 155735, 218029, 311470, 436058, 622940, 872116, 1090145, 2180290, 4360580, 4640903, 9281806, 18563612, 23204515, 32486321, 46409030, 64972642, 92818060, 129945284, 162431605, 324863210, 649726420]

約数ペア:

[(1, 649726420), (2, 324863210), (4, 162431605), (5, 129945284), (7, 92818060), (10, 64972642), (14, 46409030), (20, 32486321), (28, 23204515), (35, 18563612), (70, 9281806), (140, 4640903), (149, 4360580), (298, 2180290), (596, 1090145), (745, 872116), (1043, 622940), (1490, 436058), (2086, 311470), (2980, 218029), (4172, 155735), (5215, 124588), (10430, 62294), (20860, 31147)]