21214125

素因数分解:

$3^2\times 5^3\times {\mathrm{109}}^1\times {\mathrm{173}}^1$

素因数の和:303

約数の個数: 48

約数和(自身を含む): 38815920

約数和(自身を除く): 17601795

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 109, 125, 173, 225, 327, 375, 519, 545, 865, 981, 1125, 1557, 1635, 2595, 2725, 4325, 4905, 7785, 8175, 12975, 13625, 18857, 21625, 24525, 38925, 40875, 56571, 64875, 94285, 122625, 169713, 194625, 282855, 471425, 848565, 1414275, 2357125, 4242825, 7071375, 21214125]

約数ペア:

[(1, 21214125), (3, 7071375), (5, 4242825), (9, 2357125), (15, 1414275), (25, 848565), (45, 471425), (75, 282855), (109, 194625), (125, 169713), (173, 122625), (225, 94285), (327, 64875), (375, 56571), (519, 40875), (545, 38925), (865, 24525), (981, 21625), (1125, 18857), (1557, 13625), (1635, 12975), (2595, 8175), (2725, 7785), (4325, 4905)]