20123584

素因数分解:

$2^6\times {\mathrm{13}}^1\times {\mathrm{19}}^2\times {\mathrm{67}}^1$

素因数の和:130

約数の個数: 84

約数和(自身を含む): 46064424

約数和(自身を除く): 25940840

約数列:

[1, 2, 4, 8, 13, 16, 19, 26, 32, 38, 52, 64, 67, 76, 104, 134, 152, 208, 247, 268, 304, 361, 416, 494, 536, 608, 722, 832, 871, 988, 1072, 1216, 1273, 1444, 1742, 1976, 2144, 2546, 2888, 3484, 3952, 4288, 4693, 5092, 5776, 6968, 7904, 9386, 10184, 11552, 13936, 15808, 16549, 18772, 20368, 23104, 24187, 27872, 33098, 37544, 40736, 48374, 55744, 66196, 75088, 81472, 96748, 132392, 150176, 193496, 264784, 300352, 314431, 386992, 529568, 628862, 773984, 1059136, 1257724, 1547968, 2515448, 5030896, 10061792, 20123584]

約数ペア:

[(1, 20123584), (2, 10061792), (4, 5030896), (8, 2515448), (13, 1547968), (16, 1257724), (19, 1059136), (26, 773984), (32, 628862), (38, 529568), (52, 386992), (64, 314431), (67, 300352), (76, 264784), (104, 193496), (134, 150176), (152, 132392), (208, 96748), (247, 81472), (268, 75088), (304, 66196), (361, 55744), (416, 48374), (494, 40736), (536, 37544), (608, 33098), (722, 27872), (832, 24187), (871, 23104), (988, 20368), (1072, 18772), (1216, 16549), (1273, 15808), (1444, 13936), (1742, 11552), (1976, 10184), (2144, 9386), (2546, 7904), (2888, 6968), (3484, 5776), (3952, 5092), (4288, 4693)]