820880

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{331}}^1$

素因数の和:375

約数の個数: 40

約数和(自身を含む): 1976064

約数和(自身を除く): 1155184

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 331, 496, 620, 662, 1240, 1324, 1655, 2480, 2648, 3310, 5296, 6620, 10261, 13240, 20522, 26480, 41044, 51305, 82088, 102610, 164176, 205220, 410440, 820880]

約数ペア:

[(1, 820880), (2, 410440), (4, 205220), (5, 164176), (8, 102610), (10, 82088), (16, 51305), (20, 41044), (31, 26480), (40, 20522), (62, 13240), (80, 10261), (124, 6620), (155, 5296), (248, 3310), (310, 2648), (331, 2480), (496, 1655), (620, 1324), (662, 1240)]