90420925

素因数分解:

$5^2\times 7^2\times {\mathrm{223}}^1\times {\mathrm{331}}^1$

素因数の和:578

約数の個数: 36

約数和(自身を含む): 131408256

約数和(自身を除く): 40987331

約数列:

[1, 5, 7, 25, 35, 49, 175, 223, 245, 331, 1115, 1225, 1561, 1655, 2317, 5575, 7805, 8275, 10927, 11585, 16219, 39025, 54635, 57925, 73813, 81095, 273175, 369065, 405475, 516691, 1845325, 2583455, 3616837, 12917275, 18084185, 90420925]

約数ペア:

[(1, 90420925), (5, 18084185), (7, 12917275), (25, 3616837), (35, 2583455), (49, 1845325), (175, 516691), (223, 405475), (245, 369065), (331, 273175), (1115, 81095), (1225, 73813), (1561, 57925), (1655, 54635), (2317, 39025), (5575, 16219), (7805, 11585), (8275, 10927)]