20009080

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{239}}^1$

素因数の和:293

約数の個数: 128

約数和(自身を含む): 58060800

約数和(自身を除く): 38051720

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 23, 26, 28, 35, 40, 46, 52, 56, 65, 70, 91, 92, 104, 115, 130, 140, 161, 182, 184, 230, 239, 260, 280, 299, 322, 364, 455, 460, 478, 520, 598, 644, 728, 805, 910, 920, 956, 1195, 1196, 1288, 1495, 1610, 1673, 1820, 1912, 2093, 2390, 2392, 2990, 3107, 3220, 3346, 3640, 4186, 4780, 5497, 5980, 6214, 6440, 6692, 8365, 8372, 9560, 10465, 10994, 11960, 12428, 13384, 15535, 16730, 16744, 20930, 21749, 21988, 24856, 27485, 31070, 33460, 38479, 41860, 43498, 43976, 54970, 62140, 66920, 71461, 76958, 83720, 86996, 108745, 109940, 124280, 142922, 153916, 173992, 192395, 217490, 219880, 285844, 307832, 357305, 384790, 434980, 500227, 571688, 714610, 769580, 869960, 1000454, 1429220, 1539160, 2000908, 2501135, 2858440, 4001816, 5002270, 10004540, 20009080]

約数ペア:

[(1, 20009080), (2, 10004540), (4, 5002270), (5, 4001816), (7, 2858440), (8, 2501135), (10, 2000908), (13, 1539160), (14, 1429220), (20, 1000454), (23, 869960), (26, 769580), (28, 714610), (35, 571688), (40, 500227), (46, 434980), (52, 384790), (56, 357305), (65, 307832), (70, 285844), (91, 219880), (92, 217490), (104, 192395), (115, 173992), (130, 153916), (140, 142922), (161, 124280), (182, 109940), (184, 108745), (230, 86996), (239, 83720), (260, 76958), (280, 71461), (299, 66920), (322, 62140), (364, 54970), (455, 43976), (460, 43498), (478, 41860), (520, 38479), (598, 33460), (644, 31070), (728, 27485), (805, 24856), (910, 21988), (920, 21749), (956, 20930), (1195, 16744), (1196, 16730), (1288, 15535), (1495, 13384), (1610, 12428), (1673, 11960), (1820, 10994), (1912, 10465), (2093, 9560), (2390, 8372), (2392, 8365), (2990, 6692), (3107, 6440), (3220, 6214), (3346, 5980), (3640, 5497), (4186, 4780)]