400396080

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{238331}}^1$

素因数の和:238354

約数の個数: 80

約数和(自身を含む): 1418552064

約数和(自身を除く): 1018155984

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 56, 60, 70, 80, 84, 105, 112, 120, 140, 168, 210, 240, 280, 336, 420, 560, 840, 1680, 238331, 476662, 714993, 953324, 1191655, 1429986, 1668317, 1906648, 2383310, 2859972, 3336634, 3574965, 3813296, 4766620, 5004951, 5719944, 6673268, 7149930, 8341585, 9533240, 10009902, 11439888, 13346536, 14299860, 16683170, 19066480, 20019804, 25024755, 26693072, 28599720, 33366340, 40039608, 50049510, 57199440, 66732680, 80079216, 100099020, 133465360, 200198040, 400396080]

約数ペア:

[(1, 400396080), (2, 200198040), (3, 133465360), (4, 100099020), (5, 80079216), (6, 66732680), (7, 57199440), (8, 50049510), (10, 40039608), (12, 33366340), (14, 28599720), (15, 26693072), (16, 25024755), (20, 20019804), (21, 19066480), (24, 16683170), (28, 14299860), (30, 13346536), (35, 11439888), (40, 10009902), (42, 9533240), (48, 8341585), (56, 7149930), (60, 6673268), (70, 5719944), (80, 5004951), (84, 4766620), (105, 3813296), (112, 3574965), (120, 3336634), (140, 2859972), (168, 2383310), (210, 1906648), (240, 1668317), (280, 1429986), (336, 1191655), (420, 953324), (560, 714993), (840, 476662), (1680, 238331)]