128012020

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{191}}^1$

素因数の和:301

約数の個数: 96

約数和(自身を含む): 297271296

約数和(自身を除く): 169259276

約数列:

[1, 2, 4, 5, 10, 20, 23, 31, 46, 47, 62, 92, 94, 115, 124, 155, 188, 191, 230, 235, 310, 382, 460, 470, 620, 713, 764, 940, 955, 1081, 1426, 1457, 1910, 2162, 2852, 2914, 3565, 3820, 4324, 4393, 5405, 5828, 5921, 7130, 7285, 8786, 8977, 10810, 11842, 14260, 14570, 17572, 17954, 21620, 21965, 23684, 29140, 29605, 33511, 35908, 43930, 44885, 59210, 67022, 87860, 89770, 118420, 134044, 136183, 167555, 179540, 206471, 272366, 278287, 335110, 412942, 544732, 556574, 670220, 680915, 825884, 1032355, 1113148, 1361830, 1391435, 2064710, 2723660, 2782870, 4129420, 5565740, 6400601, 12801202, 25602404, 32003005, 64006010, 128012020]

約数ペア:

[(1, 128012020), (2, 64006010), (4, 32003005), (5, 25602404), (10, 12801202), (20, 6400601), (23, 5565740), (31, 4129420), (46, 2782870), (47, 2723660), (62, 2064710), (92, 1391435), (94, 1361830), (115, 1113148), (124, 1032355), (155, 825884), (188, 680915), (191, 670220), (230, 556574), (235, 544732), (310, 412942), (382, 335110), (460, 278287), (470, 272366), (620, 206471), (713, 179540), (764, 167555), (940, 136183), (955, 134044), (1081, 118420), (1426, 89770), (1457, 87860), (1910, 67022), (2162, 59210), (2852, 44885), (2914, 43930), (3565, 35908), (3820, 33511), (4324, 29605), (4393, 29140), (5405, 23684), (5828, 21965), (5921, 21620), (7130, 17954), (7285, 17572), (8786, 14570), (8977, 14260), (10810, 11842)]