638560980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{431}}^1\times {\mathrm{8231}}^1$

素因数の和:8677

約数の個数: 72

約数和(自身を含む): 1941698304

約数和(自身を除く): 1303137324

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 431, 862, 1293, 1724, 2155, 2586, 3879, 4310, 5172, 6465, 7758, 8231, 8620, 12930, 15516, 16462, 19395, 24693, 25860, 32924, 38790, 41155, 49386, 74079, 77580, 82310, 98772, 123465, 148158, 164620, 246930, 296316, 370395, 493860, 740790, 1481580, 3547561, 7095122, 10642683, 14190244, 17737805, 21285366, 31928049, 35475610, 42570732, 53213415, 63856098, 70951220, 106426830, 127712196, 159640245, 212853660, 319280490, 638560980]

約数ペア:

[(1, 638560980), (2, 319280490), (3, 212853660), (4, 159640245), (5, 127712196), (6, 106426830), (9, 70951220), (10, 63856098), (12, 53213415), (15, 42570732), (18, 35475610), (20, 31928049), (30, 21285366), (36, 17737805), (45, 14190244), (60, 10642683), (90, 7095122), (180, 3547561), (431, 1481580), (862, 740790), (1293, 493860), (1724, 370395), (2155, 296316), (2586, 246930), (3879, 164620), (4310, 148158), (5172, 123465), (6465, 98772), (7758, 82310), (8231, 77580), (8620, 74079), (12930, 49386), (15516, 41155), (16462, 38790), (19395, 32924), (24693, 25860)]