20682480

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{947}}^1$

素因数の和:983

約数の個数: 160

約数和(自身を含む): 78994944

約数和(自身を除く): 58312464

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 13, 14, 15, 16, 20, 21, 24, 26, 28, 30, 35, 39, 40, 42, 48, 52, 56, 60, 65, 70, 78, 80, 84, 91, 104, 105, 112, 120, 130, 140, 156, 168, 182, 195, 208, 210, 240, 260, 273, 280, 312, 336, 364, 390, 420, 455, 520, 546, 560, 624, 728, 780, 840, 910, 947, 1040, 1092, 1365, 1456, 1560, 1680, 1820, 1894, 2184, 2730, 2841, 3120, 3640, 3788, 4368, 4735, 5460, 5682, 6629, 7280, 7576, 9470, 10920, 11364, 12311, 13258, 14205, 15152, 18940, 19887, 21840, 22728, 24622, 26516, 28410, 33145, 36933, 37880, 39774, 45456, 49244, 53032, 56820, 61555, 66290, 73866, 75760, 79548, 86177, 98488, 99435, 106064, 113640, 123110, 132580, 147732, 159096, 172354, 184665, 196976, 198870, 227280, 246220, 258531, 265160, 295464, 318192, 344708, 369330, 397740, 430885, 492440, 517062, 530320, 590928, 689416, 738660, 795480, 861770, 984880, 1034124, 1292655, 1378832, 1477320, 1590960, 1723540, 2068248, 2585310, 2954640, 3447080, 4136496, 5170620, 6894160, 10341240, 20682480]

約数ペア:

[(1, 20682480), (2, 10341240), (3, 6894160), (4, 5170620), (5, 4136496), (6, 3447080), (7, 2954640), (8, 2585310), (10, 2068248), (12, 1723540), (13, 1590960), (14, 1477320), (15, 1378832), (16, 1292655), (20, 1034124), (21, 984880), (24, 861770), (26, 795480), (28, 738660), (30, 689416), (35, 590928), (39, 530320), (40, 517062), (42, 492440), (48, 430885), (52, 397740), (56, 369330), (60, 344708), (65, 318192), (70, 295464), (78, 265160), (80, 258531), (84, 246220), (91, 227280), (104, 198870), (105, 196976), (112, 184665), (120, 172354), (130, 159096), (140, 147732), (156, 132580), (168, 123110), (182, 113640), (195, 106064), (208, 99435), (210, 98488), (240, 86177), (260, 79548), (273, 75760), (280, 73866), (312, 66290), (336, 61555), (364, 56820), (390, 53032), (420, 49244), (455, 45456), (520, 39774), (546, 37880), (560, 36933), (624, 33145), (728, 28410), (780, 26516), (840, 24622), (910, 22728), (947, 21840), (1040, 19887), (1092, 18940), (1365, 15152), (1456, 14205), (1560, 13258), (1680, 12311), (1820, 11364), (1894, 10920), (2184, 9470), (2730, 7576), (2841, 7280), (3120, 6629), (3640, 5682), (3788, 5460), (4368, 4735)]