28891125

素因数分解:

$3^2\times 5^3\times {\mathrm{61}}^1\times {\mathrm{421}}^1$

素因数の和:503

約数の個数: 48

約数和(自身を含む): 53060592

約数和(自身を除く): 24169467

約数列:

[1, 3, 5, 9, 15, 25, 45, 61, 75, 125, 183, 225, 305, 375, 421, 549, 915, 1125, 1263, 1525, 2105, 2745, 3789, 4575, 6315, 7625, 10525, 13725, 18945, 22875, 25681, 31575, 52625, 68625, 77043, 94725, 128405, 157875, 231129, 385215, 473625, 642025, 1155645, 1926075, 3210125, 5778225, 9630375, 28891125]

約数ペア:

[(1, 28891125), (3, 9630375), (5, 5778225), (9, 3210125), (15, 1926075), (25, 1155645), (45, 642025), (61, 473625), (75, 385215), (125, 231129), (183, 157875), (225, 128405), (305, 94725), (375, 77043), (421, 68625), (549, 52625), (915, 31575), (1125, 25681), (1263, 22875), (1525, 18945), (2105, 13725), (2745, 10525), (3789, 7625), (4575, 6315)]