21875880

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{379}}^1$

素因数の和:443

約数の個数: 128

約数和(自身を含む): 72777600

約数和(自身を除く): 50901720

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 37, 39, 40, 52, 60, 65, 74, 78, 104, 111, 120, 130, 148, 156, 185, 195, 222, 260, 296, 312, 370, 379, 390, 444, 481, 520, 555, 740, 758, 780, 888, 962, 1110, 1137, 1443, 1480, 1516, 1560, 1895, 1924, 2220, 2274, 2405, 2886, 3032, 3790, 3848, 4440, 4548, 4810, 4927, 5685, 5772, 7215, 7580, 9096, 9620, 9854, 11370, 11544, 14023, 14430, 14781, 15160, 19240, 19708, 22740, 24635, 28046, 28860, 29562, 39416, 42069, 45480, 49270, 56092, 57720, 59124, 70115, 73905, 84138, 98540, 112184, 118248, 140230, 147810, 168276, 182299, 197080, 210345, 280460, 295620, 336552, 364598, 420690, 546897, 560920, 591240, 729196, 841380, 911495, 1093794, 1458392, 1682760, 1822990, 2187588, 2734485, 3645980, 4375176, 5468970, 7291960, 10937940, 21875880]

約数ペア:

[(1, 21875880), (2, 10937940), (3, 7291960), (4, 5468970), (5, 4375176), (6, 3645980), (8, 2734485), (10, 2187588), (12, 1822990), (13, 1682760), (15, 1458392), (20, 1093794), (24, 911495), (26, 841380), (30, 729196), (37, 591240), (39, 560920), (40, 546897), (52, 420690), (60, 364598), (65, 336552), (74, 295620), (78, 280460), (104, 210345), (111, 197080), (120, 182299), (130, 168276), (148, 147810), (156, 140230), (185, 118248), (195, 112184), (222, 98540), (260, 84138), (296, 73905), (312, 70115), (370, 59124), (379, 57720), (390, 56092), (444, 49270), (481, 45480), (520, 42069), (555, 39416), (740, 29562), (758, 28860), (780, 28046), (888, 24635), (962, 22740), (1110, 19708), (1137, 19240), (1443, 15160), (1480, 14781), (1516, 14430), (1560, 14023), (1895, 11544), (1924, 11370), (2220, 9854), (2274, 9620), (2405, 9096), (2886, 7580), (3032, 7215), (3790, 5772), (3848, 5685), (4440, 4927), (4548, 4810)]