12459980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{2819}}^1$

素因数の和:2858

約数の個数: 48

約数和(自身を含む): 29846880

約数和(自身を除く): 17386900

約数列:

[1, 2, 4, 5, 10, 13, 17, 20, 26, 34, 52, 65, 68, 85, 130, 170, 221, 260, 340, 442, 884, 1105, 2210, 2819, 4420, 5638, 11276, 14095, 28190, 36647, 47923, 56380, 73294, 95846, 146588, 183235, 191692, 239615, 366470, 479230, 622999, 732940, 958460, 1245998, 2491996, 3114995, 6229990, 12459980]

約数ペア:

[(1, 12459980), (2, 6229990), (4, 3114995), (5, 2491996), (10, 1245998), (13, 958460), (17, 732940), (20, 622999), (26, 479230), (34, 366470), (52, 239615), (65, 191692), (68, 183235), (85, 146588), (130, 95846), (170, 73294), (221, 56380), (260, 47923), (340, 36647), (442, 28190), (884, 14095), (1105, 11276), (2210, 5638), (2819, 4420)]