19357580

素因数分解:

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

素因数の和:471

約数の個数: 72

約数和(自身を含む): 47145840

約数和(自身を除く): 27788260

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 38, 44, 55, 76, 95, 110, 121, 190, 209, 220, 242, 380, 418, 421, 484, 605, 836, 842, 1045, 1210, 1684, 2090, 2105, 2299, 2420, 4180, 4210, 4598, 4631, 7999, 8420, 9196, 9262, 11495, 15998, 18524, 22990, 23155, 31996, 39995, 45980, 46310, 50941, 79990, 87989, 92620, 101882, 159980, 175978, 203764, 254705, 351956, 439945, 509410, 879890, 967879, 1018820, 1759780, 1935758, 3871516, 4839395, 9678790, 19357580]

約数ペア:

[(1, 19357580), (2, 9678790), (4, 4839395), (5, 3871516), (10, 1935758), (11, 1759780), (19, 1018820), (20, 967879), (22, 879890), (38, 509410), (44, 439945), (55, 351956), (76, 254705), (95, 203764), (110, 175978), (121, 159980), (190, 101882), (209, 92620), (220, 87989), (242, 79990), (380, 50941), (418, 46310), (421, 45980), (484, 39995), (605, 31996), (836, 23155), (842, 22990), (1045, 18524), (1210, 15998), (1684, 11495), (2090, 9262), (2105, 9196), (2299, 8420), (2420, 7999), (4180, 4631), (4210, 4598)]