20800010

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{227}}^1$

素因数の和:276

約数の個数: 96

約数和(自身を含む): 50528448

約数和(自身を除く): 29728438

約数列:

[1, 2, 5, 7, 10, 11, 14, 17, 22, 34, 35, 49, 55, 70, 77, 85, 98, 110, 119, 154, 170, 187, 227, 238, 245, 374, 385, 454, 490, 539, 595, 770, 833, 935, 1078, 1135, 1190, 1309, 1589, 1666, 1870, 2270, 2497, 2618, 2695, 3178, 3859, 4165, 4994, 5390, 6545, 7718, 7945, 8330, 9163, 11123, 12485, 13090, 15890, 17479, 18326, 19295, 22246, 24970, 27013, 34958, 38590, 42449, 45815, 54026, 55615, 84898, 87395, 91630, 111230, 122353, 135065, 174790, 189091, 212245, 244706, 270130, 297143, 378182, 424490, 594286, 611765, 945455, 1223530, 1485715, 1890910, 2080001, 2971430, 4160002, 10400005, 20800010]

約数ペア:

[(1, 20800010), (2, 10400005), (5, 4160002), (7, 2971430), (10, 2080001), (11, 1890910), (14, 1485715), (17, 1223530), (22, 945455), (34, 611765), (35, 594286), (49, 424490), (55, 378182), (70, 297143), (77, 270130), (85, 244706), (98, 212245), (110, 189091), (119, 174790), (154, 135065), (170, 122353), (187, 111230), (227, 91630), (238, 87395), (245, 84898), (374, 55615), (385, 54026), (454, 45815), (490, 42449), (539, 38590), (595, 34958), (770, 27013), (833, 24970), (935, 22246), (1078, 19295), (1135, 18326), (1190, 17479), (1309, 15890), (1589, 13090), (1666, 12485), (1870, 11123), (2270, 9163), (2497, 8330), (2618, 7945), (2695, 7718), (3178, 6545), (3859, 5390), (4165, 4994)]