257131920

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{419}}^1\times {\mathrm{2557}}^1$

素因数の和:2992

約数の個数: 80

約数和(自身を含む): 799323840

約数和(自身を除く): 542191920

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 419, 838, 1257, 1676, 2095, 2514, 2557, 3352, 4190, 5028, 5114, 6285, 6704, 7671, 8380, 10056, 10228, 12570, 12785, 15342, 16760, 20112, 20456, 25140, 25570, 30684, 33520, 38355, 40912, 50280, 51140, 61368, 76710, 100560, 102280, 122736, 153420, 204560, 306840, 613680, 1071383, 2142766, 3214149, 4285532, 5356915, 6428298, 8571064, 10713830, 12856596, 16070745, 17142128, 21427660, 25713192, 32141490, 42855320, 51426384, 64282980, 85710640, 128565960, 257131920]

約数ペア:

[(1, 257131920), (2, 128565960), (3, 85710640), (4, 64282980), (5, 51426384), (6, 42855320), (8, 32141490), (10, 25713192), (12, 21427660), (15, 17142128), (16, 16070745), (20, 12856596), (24, 10713830), (30, 8571064), (40, 6428298), (48, 5356915), (60, 4285532), (80, 3214149), (120, 2142766), (240, 1071383), (419, 613680), (838, 306840), (1257, 204560), (1676, 153420), (2095, 122736), (2514, 102280), (2557, 100560), (3352, 76710), (4190, 61368), (5028, 51140), (5114, 50280), (6285, 40912), (6704, 38355), (7671, 33520), (8380, 30684), (10056, 25570), (10228, 25140), (12570, 20456), (12785, 20112), (15342, 16760)]