640325274

素因数分解:

$2^1\times 3^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{89}}^1\times {\mathrm{823}}^1$

素因数の和:995

約数の個数: 64

約数和(自身を含む): 1366917120

約数和(自身を除く): 726591846

約数列:

[1, 2, 3, 6, 31, 47, 62, 89, 93, 94, 141, 178, 186, 267, 282, 534, 823, 1457, 1646, 2469, 2759, 2914, 4183, 4371, 4938, 5518, 8277, 8366, 8742, 12549, 16554, 25098, 25513, 38681, 51026, 73247, 76539, 77362, 116043, 129673, 146494, 153078, 219741, 232086, 259346, 389019, 439482, 778038, 1199111, 2270657, 2398222, 3442609, 3597333, 4541314, 6811971, 6885218, 7194666, 10327827, 13623942, 20655654, 106720879, 213441758, 320162637, 640325274]

約数ペア:

[(1, 640325274), (2, 320162637), (3, 213441758), (6, 106720879), (31, 20655654), (47, 13623942), (62, 10327827), (89, 7194666), (93, 6885218), (94, 6811971), (141, 4541314), (178, 3597333), (186, 3442609), (267, 2398222), (282, 2270657), (534, 1199111), (823, 778038), (1457, 439482), (1646, 389019), (2469, 259346), (2759, 232086), (2914, 219741), (4183, 153078), (4371, 146494), (4938, 129673), (5518, 116043), (8277, 77362), (8366, 76539), (8742, 73247), (12549, 51026), (16554, 38681), (25098, 25513)]