30805000

素因数分解:

$2^3\times 5^4\times {\mathrm{61}}^1\times {\mathrm{101}}^1$

素因数の和:188

約数の個数: 80

約数和(自身を含む): 74085660

約数和(自身を除く): 43280660

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 61, 100, 101, 122, 125, 200, 202, 244, 250, 305, 404, 488, 500, 505, 610, 625, 808, 1000, 1010, 1220, 1250, 1525, 2020, 2440, 2500, 2525, 3050, 4040, 5000, 5050, 6100, 6161, 7625, 10100, 12200, 12322, 12625, 15250, 20200, 24644, 25250, 30500, 30805, 38125, 49288, 50500, 61000, 61610, 63125, 76250, 101000, 123220, 126250, 152500, 154025, 246440, 252500, 305000, 308050, 505000, 616100, 770125, 1232200, 1540250, 3080500, 3850625, 6161000, 7701250, 15402500, 30805000]

約数ペア:

[(1, 30805000), (2, 15402500), (4, 7701250), (5, 6161000), (8, 3850625), (10, 3080500), (20, 1540250), (25, 1232200), (40, 770125), (50, 616100), (61, 505000), (100, 308050), (101, 305000), (122, 252500), (125, 246440), (200, 154025), (202, 152500), (244, 126250), (250, 123220), (305, 101000), (404, 76250), (488, 63125), (500, 61610), (505, 61000), (610, 50500), (625, 49288), (808, 38125), (1000, 30805), (1010, 30500), (1220, 25250), (1250, 24644), (1525, 20200), (2020, 15250), (2440, 12625), (2500, 12322), (2525, 12200), (3050, 10100), (4040, 7625), (5000, 6161), (5050, 6100)]