20115975

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{659}}^1$

素因数の和:720

約数の個数: 48

約数和(自身を含む): 37319040

約数和(自身を除く): 17203065

約数列:

[1, 3, 5, 11, 15, 25, 33, 37, 55, 75, 111, 165, 185, 275, 407, 555, 659, 825, 925, 1221, 1977, 2035, 2775, 3295, 6105, 7249, 9885, 10175, 16475, 21747, 24383, 30525, 36245, 49425, 73149, 108735, 121915, 181225, 268213, 365745, 543675, 609575, 804639, 1341065, 1828725, 4023195, 6705325, 20115975]

約数ペア:

[(1, 20115975), (3, 6705325), (5, 4023195), (11, 1828725), (15, 1341065), (25, 804639), (33, 609575), (37, 543675), (55, 365745), (75, 268213), (111, 181225), (165, 121915), (185, 108735), (275, 73149), (407, 49425), (555, 36245), (659, 30525), (825, 24383), (925, 21747), (1221, 16475), (1977, 10175), (2035, 9885), (2775, 7249), (3295, 6105)]