8798900

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{421}}^1$

素因数の和:465

約数の個数: 72

約数和(自身を含む): 21977760

約数和(自身を除く): 13178860

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 25, 38, 44, 50, 55, 76, 95, 100, 110, 190, 209, 220, 275, 380, 418, 421, 475, 550, 836, 842, 950, 1045, 1100, 1684, 1900, 2090, 2105, 4180, 4210, 4631, 5225, 7999, 8420, 9262, 10450, 10525, 15998, 18524, 20900, 21050, 23155, 31996, 39995, 42100, 46310, 79990, 87989, 92620, 115775, 159980, 175978, 199975, 231550, 351956, 399950, 439945, 463100, 799900, 879890, 1759780, 2199725, 4399450, 8798900]

約数ペア:

[(1, 8798900), (2, 4399450), (4, 2199725), (5, 1759780), (10, 879890), (11, 799900), (19, 463100), (20, 439945), (22, 399950), (25, 351956), (38, 231550), (44, 199975), (50, 175978), (55, 159980), (76, 115775), (95, 92620), (100, 87989), (110, 79990), (190, 46310), (209, 42100), (220, 39995), (275, 31996), (380, 23155), (418, 21050), (421, 20900), (475, 18524), (550, 15998), (836, 10525), (842, 10450), (950, 9262), (1045, 8420), (1100, 7999), (1684, 5225), (1900, 4631), (2090, 4210), (2105, 4180)]