1286280

素因数分解:

$2^3\times 3^4\times 5^1\times {\mathrm{397}}^1$

素因数の和:420

約数の個数: 80

約数和(自身を含む): 4334220

約数和(自身を除く): 3047940

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 40, 45, 54, 60, 72, 81, 90, 108, 120, 135, 162, 180, 216, 270, 324, 360, 397, 405, 540, 648, 794, 810, 1080, 1191, 1588, 1620, 1985, 2382, 3176, 3240, 3573, 3970, 4764, 5955, 7146, 7940, 9528, 10719, 11910, 14292, 15880, 17865, 21438, 23820, 28584, 32157, 35730, 42876, 47640, 53595, 64314, 71460, 85752, 107190, 128628, 142920, 160785, 214380, 257256, 321570, 428760, 643140, 1286280]

約数ペア:

[(1, 1286280), (2, 643140), (3, 428760), (4, 321570), (5, 257256), (6, 214380), (8, 160785), (9, 142920), (10, 128628), (12, 107190), (15, 85752), (18, 71460), (20, 64314), (24, 53595), (27, 47640), (30, 42876), (36, 35730), (40, 32157), (45, 28584), (54, 23820), (60, 21438), (72, 17865), (81, 15880), (90, 14292), (108, 11910), (120, 10719), (135, 9528), (162, 7940), (180, 7146), (216, 5955), (270, 4764), (324, 3970), (360, 3573), (397, 3240), (405, 3176), (540, 2382), (648, 1985), (794, 1620), (810, 1588), (1080, 1191)]