1520686580

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{389}}^1\times {\mathrm{3989}}^1$

素因数の和:4401

約数の個数: 72

約数和(自身を含む): 3725303400

約数和(自身を除く): 2204616820

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 389, 490, 778, 980, 1556, 1945, 2723, 3890, 3989, 5446, 7780, 7978, 10892, 13615, 15956, 19061, 19945, 27230, 27923, 38122, 39890, 54460, 55846, 76244, 79780, 95305, 111692, 139615, 190610, 195461, 279230, 381220, 390922, 558460, 781844, 977305, 1551721, 1954610, 3103442, 3909220, 6206884, 7758605, 10862047, 15517210, 21724094, 31034420, 43448188, 54310235, 76034329, 108620470, 152068658, 217240940, 304137316, 380171645, 760343290, 1520686580]

約数ペア:

[(1, 1520686580), (2, 760343290), (4, 380171645), (5, 304137316), (7, 217240940), (10, 152068658), (14, 108620470), (20, 76034329), (28, 54310235), (35, 43448188), (49, 31034420), (70, 21724094), (98, 15517210), (140, 10862047), (196, 7758605), (245, 6206884), (389, 3909220), (490, 3103442), (778, 1954610), (980, 1551721), (1556, 977305), (1945, 781844), (2723, 558460), (3890, 390922), (3989, 381220), (5446, 279230), (7780, 195461), (7978, 190610), (10892, 139615), (13615, 111692), (15956, 95305), (19061, 79780), (19945, 76244), (27230, 55846), (27923, 54460), (38122, 39890)]