21149880

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{79}}^1\times {\mathrm{97}}^1$

素因数の和:213

約数の個数: 128

約数和(自身を含む): 67737600

約数和(自身を除く): 46587720

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 23, 24, 30, 40, 46, 60, 69, 79, 92, 97, 115, 120, 138, 158, 184, 194, 230, 237, 276, 291, 316, 345, 388, 395, 460, 474, 485, 552, 582, 632, 690, 776, 790, 920, 948, 970, 1164, 1185, 1380, 1455, 1580, 1817, 1896, 1940, 2231, 2328, 2370, 2760, 2910, 3160, 3634, 3880, 4462, 4740, 5451, 5820, 6693, 7268, 7663, 8924, 9085, 9480, 10902, 11155, 11640, 13386, 14536, 15326, 17848, 18170, 21804, 22310, 22989, 26772, 27255, 30652, 33465, 36340, 38315, 43608, 44620, 45978, 53544, 54510, 61304, 66930, 72680, 76630, 89240, 91956, 109020, 114945, 133860, 153260, 176249, 183912, 218040, 229890, 267720, 306520, 352498, 459780, 528747, 704996, 881245, 919560, 1057494, 1409992, 1762490, 2114988, 2643735, 3524980, 4229976, 5287470, 7049960, 10574940, 21149880]

約数ペア:

[(1, 21149880), (2, 10574940), (3, 7049960), (4, 5287470), (5, 4229976), (6, 3524980), (8, 2643735), (10, 2114988), (12, 1762490), (15, 1409992), (20, 1057494), (23, 919560), (24, 881245), (30, 704996), (40, 528747), (46, 459780), (60, 352498), (69, 306520), (79, 267720), (92, 229890), (97, 218040), (115, 183912), (120, 176249), (138, 153260), (158, 133860), (184, 114945), (194, 109020), (230, 91956), (237, 89240), (276, 76630), (291, 72680), (316, 66930), (345, 61304), (388, 54510), (395, 53544), (460, 45978), (474, 44620), (485, 43608), (552, 38315), (582, 36340), (632, 33465), (690, 30652), (776, 27255), (790, 26772), (920, 22989), (948, 22310), (970, 21804), (1164, 18170), (1185, 17848), (1380, 15326), (1455, 14536), (1580, 13386), (1817, 11640), (1896, 11155), (1940, 10902), (2231, 9480), (2328, 9085), (2370, 8924), (2760, 7663), (2910, 7268), (3160, 6693), (3634, 5820), (3880, 5451), (4462, 4740)]