71686420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{127}}^1\times {\mathrm{167}}^1$

素因数の和:329

約数の個数: 72

約数和(自身を含む): 165279744

約数和(自身を除く): 93593324

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 127, 130, 167, 169, 254, 260, 334, 338, 508, 635, 668, 676, 835, 845, 1270, 1651, 1670, 1690, 2171, 2540, 3302, 3340, 3380, 4342, 6604, 8255, 8684, 10855, 16510, 21209, 21463, 21710, 28223, 33020, 42418, 42926, 43420, 56446, 84836, 85852, 106045, 107315, 112892, 141115, 212090, 214630, 275717, 282230, 424180, 429260, 551434, 564460, 1102868, 1378585, 2757170, 3584321, 5514340, 7168642, 14337284, 17921605, 35843210, 71686420]

約数ペア:

[(1, 71686420), (2, 35843210), (4, 17921605), (5, 14337284), (10, 7168642), (13, 5514340), (20, 3584321), (26, 2757170), (52, 1378585), (65, 1102868), (127, 564460), (130, 551434), (167, 429260), (169, 424180), (254, 282230), (260, 275717), (334, 214630), (338, 212090), (508, 141115), (635, 112892), (668, 107315), (676, 106045), (835, 85852), (845, 84836), (1270, 56446), (1651, 43420), (1670, 42926), (1690, 42418), (2171, 33020), (2540, 28223), (3302, 21710), (3340, 21463), (3380, 21209), (4342, 16510), (6604, 10855), (8255, 8684)]