15802820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{659}}^1$

素因数の和:788

約数の個数: 48

約数和(自身を含む): 36590400

約数和(自身を除く): 20787580

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 109, 110, 218, 220, 436, 545, 659, 1090, 1199, 1318, 2180, 2398, 2636, 3295, 4796, 5995, 6590, 7249, 11990, 13180, 14498, 23980, 28996, 36245, 71831, 72490, 143662, 144980, 287324, 359155, 718310, 790141, 1436620, 1580282, 3160564, 3950705, 7901410, 15802820]

約数ペア:

[(1, 15802820), (2, 7901410), (4, 3950705), (5, 3160564), (10, 1580282), (11, 1436620), (20, 790141), (22, 718310), (44, 359155), (55, 287324), (109, 144980), (110, 143662), (218, 72490), (220, 71831), (436, 36245), (545, 28996), (659, 23980), (1090, 14498), (1199, 13180), (1318, 11990), (2180, 7249), (2398, 6590), (2636, 5995), (3295, 4796)]