21440760

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{439}}^1$

素因数の和:501

約数の個数: 128

約数和(自身を含む): 72230400

約数和(自身を除く): 50789640

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 20, 22, 24, 30, 33, 37, 40, 44, 55, 60, 66, 74, 88, 110, 111, 120, 132, 148, 165, 185, 220, 222, 264, 296, 330, 370, 407, 439, 440, 444, 555, 660, 740, 814, 878, 888, 1110, 1221, 1317, 1320, 1480, 1628, 1756, 2035, 2195, 2220, 2442, 2634, 3256, 3512, 4070, 4390, 4440, 4829, 4884, 5268, 6105, 6585, 8140, 8780, 9658, 9768, 10536, 12210, 13170, 14487, 16243, 16280, 17560, 19316, 24145, 24420, 26340, 28974, 32486, 38632, 48290, 48729, 48840, 52680, 57948, 64972, 72435, 81215, 96580, 97458, 115896, 129944, 144870, 162430, 178673, 193160, 194916, 243645, 289740, 324860, 357346, 389832, 487290, 536019, 579480, 649720, 714692, 893365, 974580, 1072038, 1429384, 1786730, 1949160, 2144076, 2680095, 3573460, 4288152, 5360190, 7146920, 10720380, 21440760]

約数ペア:

[(1, 21440760), (2, 10720380), (3, 7146920), (4, 5360190), (5, 4288152), (6, 3573460), (8, 2680095), (10, 2144076), (11, 1949160), (12, 1786730), (15, 1429384), (20, 1072038), (22, 974580), (24, 893365), (30, 714692), (33, 649720), (37, 579480), (40, 536019), (44, 487290), (55, 389832), (60, 357346), (66, 324860), (74, 289740), (88, 243645), (110, 194916), (111, 193160), (120, 178673), (132, 162430), (148, 144870), (165, 129944), (185, 115896), (220, 97458), (222, 96580), (264, 81215), (296, 72435), (330, 64972), (370, 57948), (407, 52680), (439, 48840), (440, 48729), (444, 48290), (555, 38632), (660, 32486), (740, 28974), (814, 26340), (878, 24420), (888, 24145), (1110, 19316), (1221, 17560), (1317, 16280), (1320, 16243), (1480, 14487), (1628, 13170), (1756, 12210), (2035, 10536), (2195, 9768), (2220, 9658), (2442, 8780), (2634, 8140), (3256, 6585), (3512, 6105), (4070, 5268), (4390, 4884), (4440, 4829)]