28507275

素因数分解:

$3^3\times 5^2\times {\mathrm{157}}^1\times {\mathrm{269}}^1$

素因数の和:445

約数の個数: 48

約数和(自身を含む): 52898400

約数和(自身を除く): 24391125

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 135, 157, 225, 269, 471, 675, 785, 807, 1345, 1413, 2355, 2421, 3925, 4035, 4239, 6725, 7065, 7263, 11775, 12105, 20175, 21195, 35325, 36315, 42233, 60525, 105975, 126699, 181575, 211165, 380097, 633495, 1055825, 1140291, 1900485, 3167475, 5701455, 9502425, 28507275]

約数ペア:

[(1, 28507275), (3, 9502425), (5, 5701455), (9, 3167475), (15, 1900485), (25, 1140291), (27, 1055825), (45, 633495), (75, 380097), (135, 211165), (157, 181575), (225, 126699), (269, 105975), (471, 60525), (675, 42233), (785, 36315), (807, 35325), (1345, 21195), (1413, 20175), (2355, 12105), (2421, 11775), (3925, 7263), (4035, 7065), (4239, 6725)]