15840825

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{211}}^1$

素因数の和:255

約数の個数: 96

約数和(自身を含む): 35331072

約数和(自身を除く): 19490247

約数列:

[1, 3, 5, 7, 11, 13, 15, 21, 25, 33, 35, 39, 55, 65, 75, 77, 91, 105, 143, 165, 175, 195, 211, 231, 273, 275, 325, 385, 429, 455, 525, 633, 715, 825, 975, 1001, 1055, 1155, 1365, 1477, 1925, 2145, 2275, 2321, 2743, 3003, 3165, 3575, 4431, 5005, 5275, 5775, 6825, 6963, 7385, 8229, 10725, 11605, 13715, 15015, 15825, 16247, 19201, 22155, 25025, 30173, 34815, 36925, 41145, 48741, 57603, 58025, 68575, 75075, 81235, 90519, 96005, 110775, 150865, 174075, 205725, 211211, 243705, 288015, 406175, 452595, 480025, 633633, 754325, 1056055, 1218525, 1440075, 2262975, 3168165, 5280275, 15840825]

約数ペア:

[(1, 15840825), (3, 5280275), (5, 3168165), (7, 2262975), (11, 1440075), (13, 1218525), (15, 1056055), (21, 754325), (25, 633633), (33, 480025), (35, 452595), (39, 406175), (55, 288015), (65, 243705), (75, 211211), (77, 205725), (91, 174075), (105, 150865), (143, 110775), (165, 96005), (175, 90519), (195, 81235), (211, 75075), (231, 68575), (273, 58025), (275, 57603), (325, 48741), (385, 41145), (429, 36925), (455, 34815), (525, 30173), (633, 25025), (715, 22155), (825, 19201), (975, 16247), (1001, 15825), (1055, 15015), (1155, 13715), (1365, 11605), (1477, 10725), (1925, 8229), (2145, 7385), (2275, 6963), (2321, 6825), (2743, 5775), (3003, 5275), (3165, 5005), (3575, 4431)]