21151710

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{199}}^1\times {\mathrm{1181}}^1$

素因数の和:1393

約数の個数: 48

約数和(自身を含む): 55317600

約数和(自身を除く): 34165890

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 199, 398, 597, 995, 1181, 1194, 1791, 1990, 2362, 2985, 3543, 3582, 5905, 5970, 7086, 8955, 10629, 11810, 17715, 17910, 21258, 35430, 53145, 106290, 235019, 470038, 705057, 1175095, 1410114, 2115171, 2350190, 3525285, 4230342, 7050570, 10575855, 21151710]

約数ペア:

[(1, 21151710), (2, 10575855), (3, 7050570), (5, 4230342), (6, 3525285), (9, 2350190), (10, 2115171), (15, 1410114), (18, 1175095), (30, 705057), (45, 470038), (90, 235019), (199, 106290), (398, 53145), (597, 35430), (995, 21258), (1181, 17910), (1194, 17715), (1791, 11810), (1990, 10629), (2362, 8955), (2985, 7086), (3543, 5970), (3582, 5905)]