129905860

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{71}}^1\times {\mathrm{1867}}^1$

素因数の和:1961

約数の個数: 72

約数和(自身を含む): 321983424

約数和(自身を除く): 192077564

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 71, 98, 140, 142, 196, 245, 284, 355, 490, 497, 710, 980, 994, 1420, 1867, 1988, 2485, 3479, 3734, 4970, 6958, 7468, 9335, 9940, 13069, 13916, 17395, 18670, 26138, 34790, 37340, 52276, 65345, 69580, 91483, 130690, 132557, 182966, 261380, 265114, 365932, 457415, 530228, 662785, 914830, 927899, 1325570, 1829660, 1855798, 2651140, 3711596, 4639495, 6495293, 9278990, 12990586, 18557980, 25981172, 32476465, 64952930, 129905860]

約数ペア:

[(1, 129905860), (2, 64952930), (4, 32476465), (5, 25981172), (7, 18557980), (10, 12990586), (14, 9278990), (20, 6495293), (28, 4639495), (35, 3711596), (49, 2651140), (70, 1855798), (71, 1829660), (98, 1325570), (140, 927899), (142, 914830), (196, 662785), (245, 530228), (284, 457415), (355, 365932), (490, 265114), (497, 261380), (710, 182966), (980, 132557), (994, 130690), (1420, 91483), (1867, 69580), (1988, 65345), (2485, 52276), (3479, 37340), (3734, 34790), (4970, 26138), (6958, 18670), (7468, 17395), (9335, 13916), (9940, 13069)]