64722020

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{2699}}^1$

素因数の和:2828

約数の個数: 48

約数和(自身を含む): 149688000

約数和(自身を除く): 84965980

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 109, 110, 218, 220, 436, 545, 1090, 1199, 2180, 2398, 2699, 4796, 5398, 5995, 10796, 11990, 13495, 23980, 26990, 29689, 53980, 59378, 118756, 148445, 294191, 296890, 588382, 593780, 1176764, 1470955, 2941910, 3236101, 5883820, 6472202, 12944404, 16180505, 32361010, 64722020]

約数ペア:

[(1, 64722020), (2, 32361010), (4, 16180505), (5, 12944404), (10, 6472202), (11, 5883820), (20, 3236101), (22, 2941910), (44, 1470955), (55, 1176764), (109, 593780), (110, 588382), (218, 296890), (220, 294191), (436, 148445), (545, 118756), (1090, 59378), (1199, 53980), (2180, 29689), (2398, 26990), (2699, 23980), (4796, 13495), (5398, 11990), (5995, 10796)]