21527640

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{643}}^1$

素因数の和:694

約数の個数: 128

約数和(自身を含む): 74188800

約数和(自身を除く): 52661160

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 31, 36, 40, 45, 54, 60, 62, 72, 90, 93, 108, 120, 124, 135, 155, 180, 186, 216, 248, 270, 279, 310, 360, 372, 465, 540, 558, 620, 643, 744, 837, 930, 1080, 1116, 1240, 1286, 1395, 1674, 1860, 1929, 2232, 2572, 2790, 3215, 3348, 3720, 3858, 4185, 5144, 5580, 5787, 6430, 6696, 7716, 8370, 9645, 11160, 11574, 12860, 15432, 16740, 17361, 19290, 19933, 23148, 25720, 28935, 33480, 34722, 38580, 39866, 46296, 57870, 59799, 69444, 77160, 79732, 86805, 99665, 115740, 119598, 138888, 159464, 173610, 179397, 199330, 231480, 239196, 298995, 347220, 358794, 398660, 478392, 538191, 597990, 694440, 717588, 797320, 896985, 1076382, 1195980, 1435176, 1793970, 2152764, 2391960, 2690955, 3587940, 4305528, 5381910, 7175880, 10763820, 21527640]

約数ペア:

[(1, 21527640), (2, 10763820), (3, 7175880), (4, 5381910), (5, 4305528), (6, 3587940), (8, 2690955), (9, 2391960), (10, 2152764), (12, 1793970), (15, 1435176), (18, 1195980), (20, 1076382), (24, 896985), (27, 797320), (30, 717588), (31, 694440), (36, 597990), (40, 538191), (45, 478392), (54, 398660), (60, 358794), (62, 347220), (72, 298995), (90, 239196), (93, 231480), (108, 199330), (120, 179397), (124, 173610), (135, 159464), (155, 138888), (180, 119598), (186, 115740), (216, 99665), (248, 86805), (270, 79732), (279, 77160), (310, 69444), (360, 59799), (372, 57870), (465, 46296), (540, 39866), (558, 38580), (620, 34722), (643, 33480), (744, 28935), (837, 25720), (930, 23148), (1080, 19933), (1116, 19290), (1240, 17361), (1286, 16740), (1395, 15432), (1674, 12860), (1860, 11574), (1929, 11160), (2232, 9645), (2572, 8370), (2790, 7716), (3215, 6696), (3348, 6430), (3720, 5787), (3858, 5580), (4185, 5144)]