40501000

素因数分解:

$2^3\times 5^3\times {\mathrm{101}}^1\times {\mathrm{401}}^1$

素因数の和:523

約数の個数: 64

約数和(自身を含む): 95949360

約数和(自身を除く): 55448360

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 101, 125, 200, 202, 250, 401, 404, 500, 505, 802, 808, 1000, 1010, 1604, 2005, 2020, 2525, 3208, 4010, 4040, 5050, 8020, 10025, 10100, 12625, 16040, 20050, 20200, 25250, 40100, 40501, 50125, 50500, 80200, 81002, 100250, 101000, 162004, 200500, 202505, 324008, 401000, 405010, 810020, 1012525, 1620040, 2025050, 4050100, 5062625, 8100200, 10125250, 20250500, 40501000]

約数ペア:

[(1, 40501000), (2, 20250500), (4, 10125250), (5, 8100200), (8, 5062625), (10, 4050100), (20, 2025050), (25, 1620040), (40, 1012525), (50, 810020), (100, 405010), (101, 401000), (125, 324008), (200, 202505), (202, 200500), (250, 162004), (401, 101000), (404, 100250), (500, 81002), (505, 80200), (802, 50500), (808, 50125), (1000, 40501), (1010, 40100), (1604, 25250), (2005, 20200), (2020, 20050), (2525, 16040), (3208, 12625), (4010, 10100), (4040, 10025), (5050, 8020)]