28215920

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{20747}}^1$

素因数の和:20777

約数の個数: 40

約数和(自身を含む): 69464304

約数和(自身を除く): 41248384

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 20747, 41494, 82988, 103735, 165976, 207470, 331952, 352699, 414940, 705398, 829880, 1410796, 1659760, 1763495, 2821592, 3526990, 5643184, 7053980, 14107960, 28215920]

約数ペア:

[(1, 28215920), (2, 14107960), (4, 7053980), (5, 5643184), (8, 3526990), (10, 2821592), (16, 1763495), (17, 1659760), (20, 1410796), (34, 829880), (40, 705398), (68, 414940), (80, 352699), (85, 331952), (136, 207470), (170, 165976), (272, 103735), (340, 82988), (680, 41494), (1360, 20747)]