21908040

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{2371}}^1$

素因数の和:2403

約数の個数: 128

約数和(自身を含む): 81976320

約数和(自身を除く): 60068280

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 11, 12, 14, 15, 20, 21, 22, 24, 28, 30, 33, 35, 40, 42, 44, 55, 56, 60, 66, 70, 77, 84, 88, 105, 110, 120, 132, 140, 154, 165, 168, 210, 220, 231, 264, 280, 308, 330, 385, 420, 440, 462, 616, 660, 770, 840, 924, 1155, 1320, 1540, 1848, 2310, 2371, 3080, 4620, 4742, 7113, 9240, 9484, 11855, 14226, 16597, 18968, 23710, 26081, 28452, 33194, 35565, 47420, 49791, 52162, 56904, 66388, 71130, 78243, 82985, 94840, 99582, 104324, 130405, 132776, 142260, 156486, 165970, 182567, 199164, 208648, 248955, 260810, 284520, 312972, 331940, 365134, 391215, 398328, 497910, 521620, 547701, 625944, 663880, 730268, 782430, 912835, 995820, 1043240, 1095402, 1460536, 1564860, 1825670, 1991640, 2190804, 2738505, 3129720, 3651340, 4381608, 5477010, 7302680, 10954020, 21908040]

約数ペア:

[(1, 21908040), (2, 10954020), (3, 7302680), (4, 5477010), (5, 4381608), (6, 3651340), (7, 3129720), (8, 2738505), (10, 2190804), (11, 1991640), (12, 1825670), (14, 1564860), (15, 1460536), (20, 1095402), (21, 1043240), (22, 995820), (24, 912835), (28, 782430), (30, 730268), (33, 663880), (35, 625944), (40, 547701), (42, 521620), (44, 497910), (55, 398328), (56, 391215), (60, 365134), (66, 331940), (70, 312972), (77, 284520), (84, 260810), (88, 248955), (105, 208648), (110, 199164), (120, 182567), (132, 165970), (140, 156486), (154, 142260), (165, 132776), (168, 130405), (210, 104324), (220, 99582), (231, 94840), (264, 82985), (280, 78243), (308, 71130), (330, 66388), (385, 56904), (420, 52162), (440, 49791), (462, 47420), (616, 35565), (660, 33194), (770, 28452), (840, 26081), (924, 23710), (1155, 18968), (1320, 16597), (1540, 14226), (1848, 11855), (2310, 9484), (2371, 9240), (3080, 7113), (4620, 4742)]