28511505

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{239}}^1\times {\mathrm{241}}^1$

素因数の和:502

約数の個数: 48

約数和(自身を含む): 54362880

約数和(自身を除く): 25851375

約数列:

[1, 3, 5, 9, 11, 15, 33, 45, 55, 99, 165, 239, 241, 495, 717, 723, 1195, 1205, 2151, 2169, 2629, 2651, 3585, 3615, 7887, 7953, 10755, 10845, 13145, 13255, 23661, 23859, 39435, 39765, 57599, 118305, 119295, 172797, 287995, 518391, 633589, 863985, 1900767, 2591955, 3167945, 5702301, 9503835, 28511505]

約数ペア:

[(1, 28511505), (3, 9503835), (5, 5702301), (9, 3167945), (11, 2591955), (15, 1900767), (33, 863985), (45, 633589), (55, 518391), (99, 287995), (165, 172797), (239, 119295), (241, 118305), (495, 57599), (717, 39765), (723, 39435), (1195, 23859), (1205, 23661), (2151, 13255), (2169, 13145), (2629, 10845), (2651, 10755), (3585, 7953), (3615, 7887)]