646607620

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{109}}^1\times {\mathrm{233}}^1$

素因数の和:437

約数の個数: 96

約数和(自身を含む): 1470268800

約数和(自身を除く): 823661180

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 67, 76, 95, 109, 134, 190, 218, 233, 268, 335, 380, 436, 466, 545, 670, 932, 1090, 1165, 1273, 1340, 2071, 2180, 2330, 2546, 4142, 4427, 4660, 5092, 6365, 7303, 8284, 8854, 10355, 12730, 14606, 15611, 17708, 20710, 22135, 25397, 25460, 29212, 31222, 36515, 41420, 44270, 50794, 62444, 73030, 78055, 88540, 101588, 126985, 138757, 146060, 156110, 253970, 277514, 296609, 312220, 482543, 507940, 555028, 593218, 693785, 965086, 1186436, 1387570, 1483045, 1701599, 1930172, 2412715, 2775140, 2966090, 3403198, 4825430, 5932180, 6806396, 8507995, 9650860, 17015990, 32330381, 34031980, 64660762, 129321524, 161651905, 323303810, 646607620]

約数ペア:

[(1, 646607620), (2, 323303810), (4, 161651905), (5, 129321524), (10, 64660762), (19, 34031980), (20, 32330381), (38, 17015990), (67, 9650860), (76, 8507995), (95, 6806396), (109, 5932180), (134, 4825430), (190, 3403198), (218, 2966090), (233, 2775140), (268, 2412715), (335, 1930172), (380, 1701599), (436, 1483045), (466, 1387570), (545, 1186436), (670, 965086), (932, 693785), (1090, 593218), (1165, 555028), (1273, 507940), (1340, 482543), (2071, 312220), (2180, 296609), (2330, 277514), (2546, 253970), (4142, 156110), (4427, 146060), (4660, 138757), (5092, 126985), (6365, 101588), (7303, 88540), (8284, 78055), (8854, 73030), (10355, 62444), (12730, 50794), (14606, 44270), (15611, 41420), (17708, 36515), (20710, 31222), (22135, 29212), (25397, 25460)]