213565880

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{73}}^1\times {\mathrm{109}}^1$

素因数の和:265

約数の個数: 128

約数和(自身を含む): 545054400

約数和(自身を除く): 331488520

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 61, 73, 88, 109, 110, 122, 146, 218, 220, 244, 292, 305, 365, 436, 440, 488, 545, 584, 610, 671, 730, 803, 872, 1090, 1199, 1220, 1342, 1460, 1606, 2180, 2398, 2440, 2684, 2920, 3212, 3355, 4015, 4360, 4453, 4796, 5368, 5995, 6424, 6649, 6710, 7957, 8030, 8906, 9592, 11990, 13298, 13420, 15914, 16060, 17812, 22265, 23980, 26596, 26840, 31828, 32120, 33245, 35624, 39785, 44530, 47960, 48983, 53192, 63656, 66490, 73139, 79570, 87527, 89060, 97966, 132980, 146278, 159140, 175054, 178120, 195932, 244915, 265960, 292556, 318280, 350108, 365695, 391864, 437635, 485377, 489830, 585112, 700216, 731390, 875270, 970754, 979660, 1462780, 1750540, 1941508, 1959320, 2426885, 2925560, 3501080, 3883016, 4853770, 5339147, 9707540, 10678294, 19415080, 21356588, 26695735, 42713176, 53391470, 106782940, 213565880]

約数ペア:

[(1, 213565880), (2, 106782940), (4, 53391470), (5, 42713176), (8, 26695735), (10, 21356588), (11, 19415080), (20, 10678294), (22, 9707540), (40, 5339147), (44, 4853770), (55, 3883016), (61, 3501080), (73, 2925560), (88, 2426885), (109, 1959320), (110, 1941508), (122, 1750540), (146, 1462780), (218, 979660), (220, 970754), (244, 875270), (292, 731390), (305, 700216), (365, 585112), (436, 489830), (440, 485377), (488, 437635), (545, 391864), (584, 365695), (610, 350108), (671, 318280), (730, 292556), (803, 265960), (872, 244915), (1090, 195932), (1199, 178120), (1220, 175054), (1342, 159140), (1460, 146278), (1606, 132980), (2180, 97966), (2398, 89060), (2440, 87527), (2684, 79570), (2920, 73139), (3212, 66490), (3355, 63656), (4015, 53192), (4360, 48983), (4453, 47960), (4796, 44530), (5368, 39785), (5995, 35624), (6424, 33245), (6649, 32120), (6710, 31828), (7957, 26840), (8030, 26596), (8906, 23980), (9592, 22265), (11990, 17812), (13298, 16060), (13420, 15914)]