19656760

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{137}}^1\times {\mathrm{211}}^1$

素因数の和:376

約数の個数: 64

約数和(自身を含む): 47394720

約数和(自身を除く): 27737960

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 137, 170, 211, 274, 340, 422, 548, 680, 685, 844, 1055, 1096, 1370, 1688, 2110, 2329, 2740, 3587, 4220, 4658, 5480, 7174, 8440, 9316, 11645, 14348, 17935, 18632, 23290, 28696, 28907, 35870, 46580, 57814, 71740, 93160, 115628, 143480, 144535, 231256, 289070, 491419, 578140, 982838, 1156280, 1965676, 2457095, 3931352, 4914190, 9828380, 19656760]

約数ペア:

[(1, 19656760), (2, 9828380), (4, 4914190), (5, 3931352), (8, 2457095), (10, 1965676), (17, 1156280), (20, 982838), (34, 578140), (40, 491419), (68, 289070), (85, 231256), (136, 144535), (137, 143480), (170, 115628), (211, 93160), (274, 71740), (340, 57814), (422, 46580), (548, 35870), (680, 28907), (685, 28696), (844, 23290), (1055, 18632), (1096, 17935), (1370, 14348), (1688, 11645), (2110, 9316), (2329, 8440), (2740, 7174), (3587, 5480), (4220, 4658)]