206577420

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{491851}}^1$

素因数の和:491870

約数の個数: 48

約数和(自身を含む): 661049088

約数和(自身を除く): 454471668

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 491851, 983702, 1475553, 1967404, 2459255, 2951106, 3442957, 4918510, 5902212, 6885914, 7377765, 9837020, 10328871, 13771828, 14755530, 17214785, 20657742, 29511060, 34429570, 41315484, 51644355, 68859140, 103288710, 206577420]

約数ペア:

[(1, 206577420), (2, 103288710), (3, 68859140), (4, 51644355), (5, 41315484), (6, 34429570), (7, 29511060), (10, 20657742), (12, 17214785), (14, 14755530), (15, 13771828), (20, 10328871), (21, 9837020), (28, 7377765), (30, 6885914), (35, 5902212), (42, 4918510), (60, 3442957), (70, 2951106), (84, 2459255), (105, 1967404), (140, 1475553), (210, 983702), (420, 491851)]