28181115

素因数分解:

$3^4\times 5^1\times {\mathrm{149}}^1\times {\mathrm{467}}^1$

素因数の和:633

約数の個数: 40

約数和(自身を含む): 50965200

約数和(自身を除く): 22784085

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 149, 405, 447, 467, 745, 1341, 1401, 2235, 2335, 4023, 4203, 6705, 7005, 12069, 12609, 20115, 21015, 37827, 60345, 63045, 69583, 189135, 208749, 347915, 626247, 1043745, 1878741, 3131235, 5636223, 9393705, 28181115]

約数ペア:

[(1, 28181115), (3, 9393705), (5, 5636223), (9, 3131235), (15, 1878741), (27, 1043745), (45, 626247), (81, 347915), (135, 208749), (149, 189135), (405, 69583), (447, 63045), (467, 60345), (745, 37827), (1341, 21015), (1401, 20115), (2235, 12609), (2335, 12069), (4023, 7005), (4203, 6705)]