204555980

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{37}}^2\times {\mathrm{241}}^1$

素因数の和:355

約数の個数: 72

約数和(自身を含む): 457623936

約数和(自身を除く): 253067956

約数列:

[1, 2, 4, 5, 10, 20, 31, 37, 62, 74, 124, 148, 155, 185, 241, 310, 370, 482, 620, 740, 964, 1147, 1205, 1369, 2294, 2410, 2738, 4588, 4820, 5476, 5735, 6845, 7471, 8917, 11470, 13690, 14942, 17834, 22940, 27380, 29884, 35668, 37355, 42439, 44585, 74710, 84878, 89170, 149420, 169756, 178340, 212195, 276427, 329929, 424390, 552854, 659858, 848780, 1105708, 1319716, 1382135, 1649645, 2764270, 3299290, 5528540, 6598580, 10227799, 20455598, 40911196, 51138995, 102277990, 204555980]

約数ペア:

[(1, 204555980), (2, 102277990), (4, 51138995), (5, 40911196), (10, 20455598), (20, 10227799), (31, 6598580), (37, 5528540), (62, 3299290), (74, 2764270), (124, 1649645), (148, 1382135), (155, 1319716), (185, 1105708), (241, 848780), (310, 659858), (370, 552854), (482, 424390), (620, 329929), (740, 276427), (964, 212195), (1147, 178340), (1205, 169756), (1369, 149420), (2294, 89170), (2410, 84878), (2738, 74710), (4588, 44585), (4820, 42439), (5476, 37355), (5735, 35668), (6845, 29884), (7471, 27380), (8917, 22940), (11470, 17834), (13690, 14942)]