221518900

素因数分解:

$2^2\times 5^2\times {\mathrm{41}}^1\times {\mathrm{97}}^1\times {\mathrm{557}}^1$

素因数の和:709

約数の個数: 72

約数和(自身を含む): 498389976

約数和(自身を除く): 276871076

約数列:

[1, 2, 4, 5, 10, 20, 25, 41, 50, 82, 97, 100, 164, 194, 205, 388, 410, 485, 557, 820, 970, 1025, 1114, 1940, 2050, 2228, 2425, 2785, 3977, 4100, 4850, 5570, 7954, 9700, 11140, 13925, 15908, 19885, 22837, 27850, 39770, 45674, 54029, 55700, 79540, 91348, 99425, 108058, 114185, 198850, 216116, 228370, 270145, 397700, 456740, 540290, 570925, 1080580, 1141850, 1350725, 2215189, 2283700, 2701450, 4430378, 5402900, 8860756, 11075945, 22151890, 44303780, 55379725, 110759450, 221518900]

約数ペア:

[(1, 221518900), (2, 110759450), (4, 55379725), (5, 44303780), (10, 22151890), (20, 11075945), (25, 8860756), (41, 5402900), (50, 4430378), (82, 2701450), (97, 2283700), (100, 2215189), (164, 1350725), (194, 1141850), (205, 1080580), (388, 570925), (410, 540290), (485, 456740), (557, 397700), (820, 270145), (970, 228370), (1025, 216116), (1114, 198850), (1940, 114185), (2050, 108058), (2228, 99425), (2425, 91348), (2785, 79540), (3977, 55700), (4100, 54029), (4850, 45674), (5570, 39770), (7954, 27850), (9700, 22837), (11140, 19885), (13925, 15908)]