20813200

素因数分解:

$2^4\times 5^2\times {\mathrm{61}}^1\times {\mathrm{853}}^1$

素因数の和:932

約数の個数: 60

約数和(自身を含む): 50883028

約数和(自身を除く): 30069828

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 61, 80, 100, 122, 200, 244, 305, 400, 488, 610, 853, 976, 1220, 1525, 1706, 2440, 3050, 3412, 4265, 4880, 6100, 6824, 8530, 12200, 13648, 17060, 21325, 24400, 34120, 42650, 52033, 68240, 85300, 104066, 170600, 208132, 260165, 341200, 416264, 520330, 832528, 1040660, 1300825, 2081320, 2601650, 4162640, 5203300, 10406600, 20813200]

約数ペア:

[(1, 20813200), (2, 10406600), (4, 5203300), (5, 4162640), (8, 2601650), (10, 2081320), (16, 1300825), (20, 1040660), (25, 832528), (40, 520330), (50, 416264), (61, 341200), (80, 260165), (100, 208132), (122, 170600), (200, 104066), (244, 85300), (305, 68240), (400, 52033), (488, 42650), (610, 34120), (853, 24400), (976, 21325), (1220, 17060), (1525, 13648), (1706, 12200), (2440, 8530), (3050, 6824), (3412, 6100), (4265, 4880)]