72139820

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{2039}}^1$

素因数の和:2138

約数の個数: 48

約数和(自身を含む): 159364800

約数和(自身を除く): 87224980

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 61, 116, 122, 145, 244, 290, 305, 580, 610, 1220, 1769, 2039, 3538, 4078, 7076, 8156, 8845, 10195, 17690, 20390, 35380, 40780, 59131, 118262, 124379, 236524, 248758, 295655, 497516, 591310, 621895, 1182620, 1243790, 2487580, 3606991, 7213982, 14427964, 18034955, 36069910, 72139820]

約数ペア:

[(1, 72139820), (2, 36069910), (4, 18034955), (5, 14427964), (10, 7213982), (20, 3606991), (29, 2487580), (58, 1243790), (61, 1182620), (116, 621895), (122, 591310), (145, 497516), (244, 295655), (290, 248758), (305, 236524), (580, 124379), (610, 118262), (1220, 59131), (1769, 40780), (2039, 35380), (3538, 20390), (4078, 17690), (7076, 10195), (8156, 8845)]