78012400

素因数分解:

$2^4\times 5^2\times {\mathrm{101}}^1\times {\mathrm{1931}}^1$

素因数の和:2050

約数の個数: 60

約数和(自身を含む): 189378504

約数和(自身を除く): 111366104

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 101, 200, 202, 400, 404, 505, 808, 1010, 1616, 1931, 2020, 2525, 3862, 4040, 5050, 7724, 8080, 9655, 10100, 15448, 19310, 20200, 30896, 38620, 40400, 48275, 77240, 96550, 154480, 193100, 195031, 386200, 390062, 772400, 780124, 975155, 1560248, 1950310, 3120496, 3900620, 4875775, 7801240, 9751550, 15602480, 19503100, 39006200, 78012400]

約数ペア:

[(1, 78012400), (2, 39006200), (4, 19503100), (5, 15602480), (8, 9751550), (10, 7801240), (16, 4875775), (20, 3900620), (25, 3120496), (40, 1950310), (50, 1560248), (80, 975155), (100, 780124), (101, 772400), (200, 390062), (202, 386200), (400, 195031), (404, 193100), (505, 154480), (808, 96550), (1010, 77240), (1616, 48275), (1931, 40400), (2020, 38620), (2525, 30896), (3862, 20200), (4040, 19310), (5050, 15448), (7724, 10100), (8080, 9655)]