20983980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{233}}^1$

素因数の和:343

約数の個数: 96

約数和(自身を含む): 62899200

約数和(自身を除く): 41915220

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 19, 20, 30, 38, 57, 60, 76, 79, 95, 114, 158, 190, 228, 233, 237, 285, 316, 380, 395, 466, 474, 570, 699, 790, 932, 948, 1140, 1165, 1185, 1398, 1501, 1580, 2330, 2370, 2796, 3002, 3495, 4427, 4503, 4660, 4740, 6004, 6990, 7505, 8854, 9006, 13281, 13980, 15010, 17708, 18012, 18407, 22135, 22515, 26562, 30020, 36814, 44270, 45030, 53124, 55221, 66405, 73628, 88540, 90060, 92035, 110442, 132810, 184070, 220884, 265620, 276105, 349733, 368140, 552210, 699466, 1049199, 1104420, 1398932, 1748665, 2098398, 3497330, 4196796, 5245995, 6994660, 10491990, 20983980]

約数ペア:

[(1, 20983980), (2, 10491990), (3, 6994660), (4, 5245995), (5, 4196796), (6, 3497330), (10, 2098398), (12, 1748665), (15, 1398932), (19, 1104420), (20, 1049199), (30, 699466), (38, 552210), (57, 368140), (60, 349733), (76, 276105), (79, 265620), (95, 220884), (114, 184070), (158, 132810), (190, 110442), (228, 92035), (233, 90060), (237, 88540), (285, 73628), (316, 66405), (380, 55221), (395, 53124), (466, 45030), (474, 44270), (570, 36814), (699, 30020), (790, 26562), (932, 22515), (948, 22135), (1140, 18407), (1165, 18012), (1185, 17708), (1398, 15010), (1501, 13980), (1580, 13281), (2330, 9006), (2370, 8854), (2796, 7505), (3002, 6990), (3495, 6004), (4427, 4740), (4503, 4660)]