20272772

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{19}}^1\times {\mathrm{71}}^1$

素因数の和:141

約数の個数: 72

約数和(自身を含む): 43323840

約数和(自身を除く): 23051068

約数列:

[1, 2, 4, 13, 17, 19, 26, 34, 38, 52, 68, 71, 76, 142, 221, 247, 284, 289, 323, 442, 494, 578, 646, 884, 923, 988, 1156, 1207, 1292, 1349, 1846, 2414, 2698, 3692, 3757, 4199, 4828, 5396, 5491, 7514, 8398, 10982, 15028, 15691, 16796, 17537, 20519, 21964, 22933, 31382, 35074, 41038, 45866, 62764, 70148, 71383, 82076, 91732, 142766, 266747, 285532, 298129, 389861, 533494, 596258, 779722, 1066988, 1192516, 1559444, 5068193, 10136386, 20272772]

約数ペア:

[(1, 20272772), (2, 10136386), (4, 5068193), (13, 1559444), (17, 1192516), (19, 1066988), (26, 779722), (34, 596258), (38, 533494), (52, 389861), (68, 298129), (71, 285532), (76, 266747), (142, 142766), (221, 91732), (247, 82076), (284, 71383), (289, 70148), (323, 62764), (442, 45866), (494, 41038), (578, 35074), (646, 31382), (884, 22933), (923, 21964), (988, 20519), (1156, 17537), (1207, 16796), (1292, 15691), (1349, 15028), (1846, 10982), (2414, 8398), (2698, 7514), (3692, 5491), (3757, 5396), (4199, 4828)]