28662680

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{691}}^1$

素因数の和:780

約数の個数: 64

約数和(自身を含む): 69504480

約数和(自身を除く): 40841800

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 61, 68, 85, 122, 136, 170, 244, 305, 340, 488, 610, 680, 691, 1037, 1220, 1382, 2074, 2440, 2764, 3455, 4148, 5185, 5528, 6910, 8296, 10370, 11747, 13820, 20740, 23494, 27640, 41480, 42151, 46988, 58735, 84302, 93976, 117470, 168604, 210755, 234940, 337208, 421510, 469880, 716567, 843020, 1433134, 1686040, 2866268, 3582835, 5732536, 7165670, 14331340, 28662680]

約数ペア:

[(1, 28662680), (2, 14331340), (4, 7165670), (5, 5732536), (8, 3582835), (10, 2866268), (17, 1686040), (20, 1433134), (34, 843020), (40, 716567), (61, 469880), (68, 421510), (85, 337208), (122, 234940), (136, 210755), (170, 168604), (244, 117470), (305, 93976), (340, 84302), (488, 58735), (610, 46988), (680, 42151), (691, 41480), (1037, 27640), (1220, 23494), (1382, 20740), (2074, 13820), (2440, 11747), (2764, 10370), (3455, 8296), (4148, 6910), (5185, 5528)]