15980860

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{709}}^1$

素因数の和:755

約数の個数: 72

約数和(自身を含む): 40793760

約数和(自身を除く): 24812900

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 28, 35, 46, 49, 70, 92, 98, 115, 140, 161, 196, 230, 245, 322, 460, 490, 644, 709, 805, 980, 1127, 1418, 1610, 2254, 2836, 3220, 3545, 4508, 4963, 5635, 7090, 9926, 11270, 14180, 16307, 19852, 22540, 24815, 32614, 34741, 49630, 65228, 69482, 81535, 99260, 114149, 138964, 163070, 173705, 228298, 326140, 347410, 456596, 570745, 694820, 799043, 1141490, 1598086, 2282980, 3196172, 3995215, 7990430, 15980860]

約数ペア:

[(1, 15980860), (2, 7990430), (4, 3995215), (5, 3196172), (7, 2282980), (10, 1598086), (14, 1141490), (20, 799043), (23, 694820), (28, 570745), (35, 456596), (46, 347410), (49, 326140), (70, 228298), (92, 173705), (98, 163070), (115, 138964), (140, 114149), (161, 99260), (196, 81535), (230, 69482), (245, 65228), (322, 49630), (460, 34741), (490, 32614), (644, 24815), (709, 22540), (805, 19852), (980, 16307), (1127, 14180), (1418, 11270), (1610, 9926), (2254, 7090), (2836, 5635), (3220, 4963), (3545, 4508)]