20968480

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{593}}^1$

素因数の和:638

約数の個数: 96

約数和(自身を含む): 56582064

約数和(自身を除く): 35613584

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, 593, 680, 884, 1040, 1105, 1186, 1360, 1768, 2080, 2210, 2372, 2720, 2965, 3536, 4420, 4744, 5930, 7072, 7709, 8840, 9488, 10081, 11860, 15418, 17680, 18976, 20162, 23720, 30836, 35360, 38545, 40324, 47440, 50405, 61672, 77090, 80648, 94880, 100810, 123344, 131053, 154180, 161296, 201620, 246688, 262106, 308360, 322592, 403240, 524212, 616720, 655265, 806480, 1048424, 1233440, 1310530, 1612960, 2096848, 2621060, 4193696, 5242120, 10484240, 20968480]

約数ペア:

[(1, 20968480), (2, 10484240), (4, 5242120), (5, 4193696), (8, 2621060), (10, 2096848), (13, 1612960), (16, 1310530), (17, 1233440), (20, 1048424), (26, 806480), (32, 655265), (34, 616720), (40, 524212), (52, 403240), (65, 322592), (68, 308360), (80, 262106), (85, 246688), (104, 201620), (130, 161296), (136, 154180), (160, 131053), (170, 123344), (208, 100810), (221, 94880), (260, 80648), (272, 77090), (340, 61672), (416, 50405), (442, 47440), (520, 40324), (544, 38545), (593, 35360), (680, 30836), (884, 23720), (1040, 20162), (1105, 18976), (1186, 17680), (1360, 15418), (1768, 11860), (2080, 10081), (2210, 9488), (2372, 8840), (2720, 7709), (2965, 7072), (3536, 5930), (4420, 4744)]