19980870

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{563}}^1$

素因数の和:606

約数の個数: 96

約数和(自身を含む): 59450112

約数和(自身を除く): 39469242

約数列:

[1, 2, 3, 5, 6, 7, 10, 13, 14, 15, 21, 26, 30, 35, 39, 42, 65, 70, 78, 91, 105, 130, 169, 182, 195, 210, 273, 338, 390, 455, 507, 546, 563, 845, 910, 1014, 1126, 1183, 1365, 1689, 1690, 2366, 2535, 2730, 2815, 3378, 3549, 3941, 5070, 5630, 5915, 7098, 7319, 7882, 8445, 11823, 11830, 14638, 16890, 17745, 19705, 21957, 23646, 35490, 36595, 39410, 43914, 51233, 59115, 73190, 95147, 102466, 109785, 118230, 153699, 190294, 219570, 256165, 285441, 307398, 475735, 512330, 570882, 666029, 768495, 951470, 1332058, 1427205, 1536990, 1998087, 2854410, 3330145, 3996174, 6660290, 9990435, 19980870]

約数ペア:

[(1, 19980870), (2, 9990435), (3, 6660290), (5, 3996174), (6, 3330145), (7, 2854410), (10, 1998087), (13, 1536990), (14, 1427205), (15, 1332058), (21, 951470), (26, 768495), (30, 666029), (35, 570882), (39, 512330), (42, 475735), (65, 307398), (70, 285441), (78, 256165), (91, 219570), (105, 190294), (130, 153699), (169, 118230), (182, 109785), (195, 102466), (210, 95147), (273, 73190), (338, 59115), (390, 51233), (455, 43914), (507, 39410), (546, 36595), (563, 35490), (845, 23646), (910, 21957), (1014, 19705), (1126, 17745), (1183, 16890), (1365, 14638), (1689, 11830), (1690, 11823), (2366, 8445), (2535, 7882), (2730, 7319), (2815, 7098), (3378, 5915), (3549, 5630), (3941, 5070)]