639127260

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{394523}}^1$

素因数の和:394544

約数の個数: 60

約数和(自身を含む): 2004970968

約数和(自身を除く): 1365843708

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 81, 90, 108, 135, 162, 180, 270, 324, 405, 540, 810, 1620, 394523, 789046, 1183569, 1578092, 1972615, 2367138, 3550707, 3945230, 4734276, 5917845, 7101414, 7890460, 10652121, 11835690, 14202828, 17753535, 21304242, 23671380, 31956363, 35507070, 42608484, 53260605, 63912726, 71014140, 106521210, 127825452, 159781815, 213042420, 319563630, 639127260]

約数ペア:

[(1, 639127260), (2, 319563630), (3, 213042420), (4, 159781815), (5, 127825452), (6, 106521210), (9, 71014140), (10, 63912726), (12, 53260605), (15, 42608484), (18, 35507070), (20, 31956363), (27, 23671380), (30, 21304242), (36, 17753535), (45, 14202828), (54, 11835690), (60, 10652121), (81, 7890460), (90, 7101414), (108, 5917845), (135, 4734276), (162, 3945230), (180, 3550707), (270, 2367138), (324, 1972615), (405, 1578092), (540, 1183569), (810, 789046), (1620, 394523)]