15531820

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{439}}^1$

素因数の和:538

約数の個数: 48

約数和(自身を含む): 34372800

約数和(自身を除く): 18840980

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 61, 116, 122, 145, 244, 290, 305, 439, 580, 610, 878, 1220, 1756, 1769, 2195, 3538, 4390, 7076, 8780, 8845, 12731, 17690, 25462, 26779, 35380, 50924, 53558, 63655, 107116, 127310, 133895, 254620, 267790, 535580, 776591, 1553182, 3106364, 3882955, 7765910, 15531820]

約数ペア:

[(1, 15531820), (2, 7765910), (4, 3882955), (5, 3106364), (10, 1553182), (20, 776591), (29, 535580), (58, 267790), (61, 254620), (116, 133895), (122, 127310), (145, 107116), (244, 63655), (290, 53558), (305, 50924), (439, 35380), (580, 26779), (610, 25462), (878, 17690), (1220, 12731), (1756, 8845), (1769, 8780), (2195, 7076), (3538, 4390)]