15811880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{149}}^1\times {\mathrm{379}}^1$

素因数の和:546

約数の個数: 64

約数和(自身を含む): 41040000

約数和(自身を除く): 25228120

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 149, 280, 298, 379, 596, 745, 758, 1043, 1192, 1490, 1516, 1895, 2086, 2653, 2980, 3032, 3790, 4172, 5215, 5306, 5960, 7580, 8344, 10430, 10612, 13265, 15160, 20860, 21224, 26530, 41720, 53060, 56471, 106120, 112942, 225884, 282355, 395297, 451768, 564710, 790594, 1129420, 1581188, 1976485, 2258840, 3162376, 3952970, 7905940, 15811880]

約数ペア:

[(1, 15811880), (2, 7905940), (4, 3952970), (5, 3162376), (7, 2258840), (8, 1976485), (10, 1581188), (14, 1129420), (20, 790594), (28, 564710), (35, 451768), (40, 395297), (56, 282355), (70, 225884), (140, 112942), (149, 106120), (280, 56471), (298, 53060), (379, 41720), (596, 26530), (745, 21224), (758, 20860), (1043, 15160), (1192, 13265), (1490, 10612), (1516, 10430), (1895, 8344), (2086, 7580), (2653, 5960), (2980, 5306), (3032, 5215), (3790, 4172)]