81716960

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{2311}}^1$

素因数の和:2356

約数の個数: 96

約数和(自身を含む): 220231872

約数和(自身を除く): 138514912

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 17, 20, 26, 32, 34, 40, 52, 65, 68, 80, 85, 104, 130, 136, 160, 170, 208, 221, 260, 272, 340, 416, 442, 520, 544, 680, 884, 1040, 1105, 1360, 1768, 2080, 2210, 2311, 2720, 3536, 4420, 4622, 7072, 8840, 9244, 11555, 17680, 18488, 23110, 30043, 35360, 36976, 39287, 46220, 60086, 73952, 78574, 92440, 120172, 150215, 157148, 184880, 196435, 240344, 300430, 314296, 369760, 392870, 480688, 510731, 600860, 628592, 785740, 961376, 1021462, 1201720, 1257184, 1571480, 2042924, 2403440, 2553655, 3142960, 4085848, 4806880, 5107310, 6285920, 8171696, 10214620, 16343392, 20429240, 40858480, 81716960]

約数ペア:

[(1, 81716960), (2, 40858480), (4, 20429240), (5, 16343392), (8, 10214620), (10, 8171696), (13, 6285920), (16, 5107310), (17, 4806880), (20, 4085848), (26, 3142960), (32, 2553655), (34, 2403440), (40, 2042924), (52, 1571480), (65, 1257184), (68, 1201720), (80, 1021462), (85, 961376), (104, 785740), (130, 628592), (136, 600860), (160, 510731), (170, 480688), (208, 392870), (221, 369760), (260, 314296), (272, 300430), (340, 240344), (416, 196435), (442, 184880), (520, 157148), (544, 150215), (680, 120172), (884, 92440), (1040, 78574), (1105, 73952), (1360, 60086), (1768, 46220), (2080, 39287), (2210, 36976), (2311, 35360), (2720, 30043), (3536, 23110), (4420, 18488), (4622, 17680), (7072, 11555), (8840, 9244)]