20199385480

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{139}}^1\times {\mathrm{117193}}^1$

素因数の和:117374

約数の個数: 64

約数和(自身を含む): 47252620800

約数和(自身を除く): 27053235320

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 139, 155, 248, 278, 310, 556, 620, 695, 1112, 1240, 1390, 2780, 4309, 5560, 8618, 17236, 21545, 34472, 43090, 86180, 117193, 172360, 234386, 468772, 585965, 937544, 1171930, 2343860, 3632983, 4687720, 7265966, 14531932, 16289827, 18164915, 29063864, 32579654, 36329830, 65159308, 72659660, 81449135, 130318616, 145319320, 162898270, 325796540, 504984637, 651593080, 1009969274, 2019938548, 2524923185, 4039877096, 5049846370, 10099692740, 20199385480]

約数ペア:

[(1, 20199385480), (2, 10099692740), (4, 5049846370), (5, 4039877096), (8, 2524923185), (10, 2019938548), (20, 1009969274), (31, 651593080), (40, 504984637), (62, 325796540), (124, 162898270), (139, 145319320), (155, 130318616), (248, 81449135), (278, 72659660), (310, 65159308), (556, 36329830), (620, 32579654), (695, 29063864), (1112, 18164915), (1240, 16289827), (1390, 14531932), (2780, 7265966), (4309, 4687720), (5560, 3632983), (8618, 2343860), (17236, 1171930), (21545, 937544), (34472, 585965), (43090, 468772), (86180, 234386), (117193, 172360)]