18866120

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{73}}^1$

素因数の和:175

約数の個数: 128

約数和(自身を含む): 53706240

約数和(自身を除く): 34840120

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 52, 56, 65, 70, 71, 73, 91, 104, 130, 140, 142, 146, 182, 260, 280, 284, 292, 355, 364, 365, 455, 497, 511, 520, 568, 584, 710, 728, 730, 910, 923, 949, 994, 1022, 1420, 1460, 1820, 1846, 1898, 1988, 2044, 2485, 2555, 2840, 2920, 3640, 3692, 3796, 3976, 4088, 4615, 4745, 4970, 5110, 5183, 6461, 6643, 7384, 7592, 9230, 9490, 9940, 10220, 10366, 12922, 13286, 18460, 18980, 19880, 20440, 20732, 25844, 25915, 26572, 32305, 33215, 36281, 36920, 37960, 41464, 51688, 51830, 53144, 64610, 66430, 67379, 72562, 103660, 129220, 132860, 134758, 145124, 181405, 207320, 258440, 265720, 269516, 290248, 336895, 362810, 471653, 539032, 673790, 725620, 943306, 1347580, 1451240, 1886612, 2358265, 2695160, 3773224, 4716530, 9433060, 18866120]

約数ペア:

[(1, 18866120), (2, 9433060), (4, 4716530), (5, 3773224), (7, 2695160), (8, 2358265), (10, 1886612), (13, 1451240), (14, 1347580), (20, 943306), (26, 725620), (28, 673790), (35, 539032), (40, 471653), (52, 362810), (56, 336895), (65, 290248), (70, 269516), (71, 265720), (73, 258440), (91, 207320), (104, 181405), (130, 145124), (140, 134758), (142, 132860), (146, 129220), (182, 103660), (260, 72562), (280, 67379), (284, 66430), (292, 64610), (355, 53144), (364, 51830), (365, 51688), (455, 41464), (497, 37960), (511, 36920), (520, 36281), (568, 33215), (584, 32305), (710, 26572), (728, 25915), (730, 25844), (910, 20732), (923, 20440), (949, 19880), (994, 18980), (1022, 18460), (1420, 13286), (1460, 12922), (1820, 10366), (1846, 10220), (1898, 9940), (1988, 9490), (2044, 9230), (2485, 7592), (2555, 7384), (2840, 6643), (2920, 6461), (3640, 5183), (3692, 5110), (3796, 4970), (3976, 4745), (4088, 4615)]