28185225

素因数分解:

$3^1\times 5^2\times {\mathrm{67}}^1\times {\mathrm{71}}^1\times {\mathrm{79}}^1$

素因数の和:230

約数の個数: 48

約数和(自身を含む): 48568320

約数和(自身を除く): 20383095

約数列:

[1, 3, 5, 15, 25, 67, 71, 75, 79, 201, 213, 237, 335, 355, 395, 1005, 1065, 1185, 1675, 1775, 1975, 4757, 5025, 5293, 5325, 5609, 5925, 14271, 15879, 16827, 23785, 26465, 28045, 71355, 79395, 84135, 118925, 132325, 140225, 356775, 375803, 396975, 420675, 1127409, 1879015, 5637045, 9395075, 28185225]

約数ペア:

[(1, 28185225), (3, 9395075), (5, 5637045), (15, 1879015), (25, 1127409), (67, 420675), (71, 396975), (75, 375803), (79, 356775), (201, 140225), (213, 132325), (237, 118925), (335, 84135), (355, 79395), (395, 71355), (1005, 28045), (1065, 26465), (1185, 23785), (1675, 16827), (1775, 15879), (1975, 14271), (4757, 5925), (5025, 5609), (5293, 5325)]