20726264

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{617}}^1$

素因数の和:672

約数の個数: 64

約数和(自身を含む): 46720800

約数和(自身を除く): 25994536

約数列:

[1, 2, 4, 8, 13, 17, 19, 26, 34, 38, 52, 68, 76, 104, 136, 152, 221, 247, 323, 442, 494, 617, 646, 884, 988, 1234, 1292, 1768, 1976, 2468, 2584, 4199, 4936, 8021, 8398, 10489, 11723, 16042, 16796, 20978, 23446, 32084, 33592, 41956, 46892, 64168, 83912, 93784, 136357, 152399, 199291, 272714, 304798, 398582, 545428, 609596, 797164, 1090856, 1219192, 1594328, 2590783, 5181566, 10363132, 20726264]

約数ペア:

[(1, 20726264), (2, 10363132), (4, 5181566), (8, 2590783), (13, 1594328), (17, 1219192), (19, 1090856), (26, 797164), (34, 609596), (38, 545428), (52, 398582), (68, 304798), (76, 272714), (104, 199291), (136, 152399), (152, 136357), (221, 93784), (247, 83912), (323, 64168), (442, 46892), (494, 41956), (617, 33592), (646, 32084), (884, 23446), (988, 20978), (1234, 16796), (1292, 16042), (1768, 11723), (1976, 10489), (2468, 8398), (2584, 8021), (4199, 4936)]