305000

素因数分解:

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

素因数の和:87

約数の個数: 40

約数和(自身を含む): 726330

約数和(自身を除く): 421330

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 61, 100, 122, 125, 200, 244, 250, 305, 488, 500, 610, 625, 1000, 1220, 1250, 1525, 2440, 2500, 3050, 5000, 6100, 7625, 12200, 15250, 30500, 38125, 61000, 76250, 152500, 305000]

約数ペア:

[(1, 305000), (2, 152500), (4, 76250), (5, 61000), (8, 38125), (10, 30500), (20, 15250), (25, 12200), (40, 7625), (50, 6100), (61, 5000), (100, 3050), (122, 2500), (125, 2440), (200, 1525), (244, 1250), (250, 1220), (305, 1000), (488, 625), (500, 610)]