25580840

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{97}}^1\times {\mathrm{347}}^1$

素因数の和:474

約数の個数: 64

約数和(自身を含む): 61387200

約数和(自身を除く): 35806360

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 97, 152, 190, 194, 347, 380, 388, 485, 694, 760, 776, 970, 1388, 1735, 1843, 1940, 2776, 3470, 3686, 3880, 6593, 6940, 7372, 9215, 13186, 13880, 14744, 18430, 26372, 32965, 33659, 36860, 52744, 65930, 67318, 73720, 131860, 134636, 168295, 263720, 269272, 336590, 639521, 673180, 1279042, 1346360, 2558084, 3197605, 5116168, 6395210, 12790420, 25580840]

約数ペア:

[(1, 25580840), (2, 12790420), (4, 6395210), (5, 5116168), (8, 3197605), (10, 2558084), (19, 1346360), (20, 1279042), (38, 673180), (40, 639521), (76, 336590), (95, 269272), (97, 263720), (152, 168295), (190, 134636), (194, 131860), (347, 73720), (380, 67318), (388, 65930), (485, 52744), (694, 36860), (760, 33659), (776, 32965), (970, 26372), (1388, 18430), (1735, 14744), (1843, 13880), (1940, 13186), (2776, 9215), (3470, 7372), (3686, 6940), (3880, 6593)]