31516420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{2819}}^1$

素因数の和:2884

約数の個数: 48

約数和(自身を含む): 72959040

約数和(自身を除く): 41442620

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 43, 52, 65, 86, 130, 172, 215, 260, 430, 559, 860, 1118, 2236, 2795, 2819, 5590, 5638, 11180, 11276, 14095, 28190, 36647, 56380, 73294, 121217, 146588, 183235, 242434, 366470, 484868, 606085, 732940, 1212170, 1575821, 2424340, 3151642, 6303284, 7879105, 15758210, 31516420]

約数ペア:

[(1, 31516420), (2, 15758210), (4, 7879105), (5, 6303284), (10, 3151642), (13, 2424340), (20, 1575821), (26, 1212170), (43, 732940), (52, 606085), (65, 484868), (86, 366470), (130, 242434), (172, 183235), (215, 146588), (260, 121217), (430, 73294), (559, 56380), (860, 36647), (1118, 28190), (2236, 14095), (2795, 11276), (2819, 11180), (5590, 5638)]