218080040

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{397}}^1\times {\mathrm{443}}^1$

素因数の和:882

約数の個数: 64

約数和(自身を含む): 508930560

約数和(自身を除く): 290850520

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 397, 443, 620, 794, 886, 1240, 1588, 1772, 1985, 2215, 3176, 3544, 3970, 4430, 7940, 8860, 12307, 13733, 15880, 17720, 24614, 27466, 49228, 54932, 61535, 68665, 98456, 109864, 123070, 137330, 175871, 246140, 274660, 351742, 492280, 549320, 703484, 879355, 1406968, 1758710, 3517420, 5452001, 7034840, 10904002, 21808004, 27260005, 43616008, 54520010, 109040020, 218080040]

約数ペア:

[(1, 218080040), (2, 109040020), (4, 54520010), (5, 43616008), (8, 27260005), (10, 21808004), (20, 10904002), (31, 7034840), (40, 5452001), (62, 3517420), (124, 1758710), (155, 1406968), (248, 879355), (310, 703484), (397, 549320), (443, 492280), (620, 351742), (794, 274660), (886, 246140), (1240, 175871), (1588, 137330), (1772, 123070), (1985, 109864), (2215, 98456), (3176, 68665), (3544, 61535), (3970, 54932), (4430, 49228), (7940, 27466), (8860, 24614), (12307, 17720), (13733, 15880)]