245825840

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{239}}^1$

素因数の和:331

約数の個数: 160

約数和(自身を含む): 659957760

約数和(自身を除く): 414131920

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 23, 26, 40, 43, 46, 52, 65, 80, 86, 92, 104, 115, 130, 172, 184, 208, 215, 230, 239, 260, 299, 344, 368, 430, 460, 478, 520, 559, 598, 688, 860, 920, 956, 989, 1040, 1118, 1195, 1196, 1495, 1720, 1840, 1912, 1978, 2236, 2390, 2392, 2795, 2990, 3107, 3440, 3824, 3956, 4472, 4780, 4784, 4945, 5497, 5590, 5980, 6214, 7912, 8944, 9560, 9890, 10277, 10994, 11180, 11960, 12428, 12857, 15535, 15824, 19120, 19780, 20554, 21988, 22360, 23920, 24856, 25714, 27485, 31070, 39560, 41108, 43976, 44720, 49712, 51385, 51428, 54970, 62140, 64285, 71461, 79120, 82216, 87952, 102770, 102856, 109940, 124280, 128570, 133601, 142922, 164432, 205540, 205712, 219880, 236371, 248560, 257140, 267202, 285844, 357305, 411080, 439760, 472742, 514280, 534404, 571688, 668005, 714610, 822160, 945484, 1028560, 1068808, 1143376, 1181855, 1336010, 1429220, 1890968, 2137616, 2363710, 2672020, 2858440, 3072823, 3781936, 4727420, 5344040, 5716880, 6145646, 9454840, 10688080, 12291292, 15364115, 18909680, 24582584, 30728230, 49165168, 61456460, 122912920, 245825840]

約数ペア:

[(1, 245825840), (2, 122912920), (4, 61456460), (5, 49165168), (8, 30728230), (10, 24582584), (13, 18909680), (16, 15364115), (20, 12291292), (23, 10688080), (26, 9454840), (40, 6145646), (43, 5716880), (46, 5344040), (52, 4727420), (65, 3781936), (80, 3072823), (86, 2858440), (92, 2672020), (104, 2363710), (115, 2137616), (130, 1890968), (172, 1429220), (184, 1336010), (208, 1181855), (215, 1143376), (230, 1068808), (239, 1028560), (260, 945484), (299, 822160), (344, 714610), (368, 668005), (430, 571688), (460, 534404), (478, 514280), (520, 472742), (559, 439760), (598, 411080), (688, 357305), (860, 285844), (920, 267202), (956, 257140), (989, 248560), (1040, 236371), (1118, 219880), (1195, 205712), (1196, 205540), (1495, 164432), (1720, 142922), (1840, 133601), (1912, 128570), (1978, 124280), (2236, 109940), (2390, 102856), (2392, 102770), (2795, 87952), (2990, 82216), (3107, 79120), (3440, 71461), (3824, 64285), (3956, 62140), (4472, 54970), (4780, 51428), (4784, 51385), (4945, 49712), (5497, 44720), (5590, 43976), (5980, 41108), (6214, 39560), (7912, 31070), (8944, 27485), (9560, 25714), (9890, 24856), (10277, 23920), (10994, 22360), (11180, 21988), (11960, 20554), (12428, 19780), (12857, 19120), (15535, 15824)]