201487990

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{89}}^1\times {\mathrm{1871}}^1$

素因数の和:1989

約数の個数: 48

約数和(自身を含む): 403341120

約数和(自身を除く): 201853130

約数列:

[1, 2, 5, 10, 11, 22, 55, 89, 110, 121, 178, 242, 445, 605, 890, 979, 1210, 1871, 1958, 3742, 4895, 9355, 9790, 10769, 18710, 20581, 21538, 41162, 53845, 102905, 107690, 166519, 205810, 226391, 333038, 452782, 832595, 1131955, 1665190, 1831709, 2263910, 3663418, 9158545, 18317090, 20148799, 40297598, 100743995, 201487990]

約数ペア:

[(1, 201487990), (2, 100743995), (5, 40297598), (10, 20148799), (11, 18317090), (22, 9158545), (55, 3663418), (89, 2263910), (110, 1831709), (121, 1665190), (178, 1131955), (242, 832595), (445, 452782), (605, 333038), (890, 226391), (979, 205810), (1210, 166519), (1871, 107690), (1958, 102905), (3742, 53845), (4895, 41162), (9355, 21538), (9790, 20581), (10769, 18710)]