21367440

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{59}}^1\times {\mathrm{503}}^1$

素因数の和:581

約数の個数: 120

約数和(自身を含む): 73120320

約数和(自身を除く): 51752880

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 59, 60, 72, 80, 90, 118, 120, 144, 177, 180, 236, 240, 295, 354, 360, 472, 503, 531, 590, 708, 720, 885, 944, 1006, 1062, 1180, 1416, 1509, 1770, 2012, 2124, 2360, 2515, 2655, 2832, 3018, 3540, 4024, 4248, 4527, 4720, 5030, 5310, 6036, 7080, 7545, 8048, 8496, 9054, 10060, 10620, 12072, 14160, 15090, 18108, 20120, 21240, 22635, 24144, 29677, 30180, 36216, 40240, 42480, 45270, 59354, 60360, 72432, 89031, 90540, 118708, 120720, 148385, 178062, 181080, 237416, 267093, 296770, 356124, 362160, 445155, 474832, 534186, 593540, 712248, 890310, 1068372, 1187080, 1335465, 1424496, 1780620, 2136744, 2374160, 2670930, 3561240, 4273488, 5341860, 7122480, 10683720, 21367440]

約数ペア:

[(1, 21367440), (2, 10683720), (3, 7122480), (4, 5341860), (5, 4273488), (6, 3561240), (8, 2670930), (9, 2374160), (10, 2136744), (12, 1780620), (15, 1424496), (16, 1335465), (18, 1187080), (20, 1068372), (24, 890310), (30, 712248), (36, 593540), (40, 534186), (45, 474832), (48, 445155), (59, 362160), (60, 356124), (72, 296770), (80, 267093), (90, 237416), (118, 181080), (120, 178062), (144, 148385), (177, 120720), (180, 118708), (236, 90540), (240, 89031), (295, 72432), (354, 60360), (360, 59354), (472, 45270), (503, 42480), (531, 40240), (590, 36216), (708, 30180), (720, 29677), (885, 24144), (944, 22635), (1006, 21240), (1062, 20120), (1180, 18108), (1416, 15090), (1509, 14160), (1770, 12072), (2012, 10620), (2124, 10060), (2360, 9054), (2515, 8496), (2655, 8048), (2832, 7545), (3018, 7080), (3540, 6036), (4024, 5310), (4248, 5030), (4527, 4720)]