21644040

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{863}}^1$

素因数の和:907

約数の個数: 128

約数和(自身を含む): 74649600

約数和(自身を除く): 53005560

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 19, 20, 22, 24, 30, 33, 38, 40, 44, 55, 57, 60, 66, 76, 88, 95, 110, 114, 120, 132, 152, 165, 190, 209, 220, 228, 264, 285, 330, 380, 418, 440, 456, 570, 627, 660, 760, 836, 863, 1045, 1140, 1254, 1320, 1672, 1726, 2090, 2280, 2508, 2589, 3135, 3452, 4180, 4315, 5016, 5178, 6270, 6904, 8360, 8630, 9493, 10356, 12540, 12945, 16397, 17260, 18986, 20712, 25080, 25890, 28479, 32794, 34520, 37972, 47465, 49191, 51780, 56958, 65588, 75944, 81985, 94930, 98382, 103560, 113916, 131176, 142395, 163970, 180367, 189860, 196764, 227832, 245955, 284790, 327940, 360734, 379720, 393528, 491910, 541101, 569580, 655880, 721468, 901835, 983820, 1082202, 1139160, 1442936, 1803670, 1967640, 2164404, 2705505, 3607340, 4328808, 5411010, 7214680, 10822020, 21644040]

約数ペア:

[(1, 21644040), (2, 10822020), (3, 7214680), (4, 5411010), (5, 4328808), (6, 3607340), (8, 2705505), (10, 2164404), (11, 1967640), (12, 1803670), (15, 1442936), (19, 1139160), (20, 1082202), (22, 983820), (24, 901835), (30, 721468), (33, 655880), (38, 569580), (40, 541101), (44, 491910), (55, 393528), (57, 379720), (60, 360734), (66, 327940), (76, 284790), (88, 245955), (95, 227832), (110, 196764), (114, 189860), (120, 180367), (132, 163970), (152, 142395), (165, 131176), (190, 113916), (209, 103560), (220, 98382), (228, 94930), (264, 81985), (285, 75944), (330, 65588), (380, 56958), (418, 51780), (440, 49191), (456, 47465), (570, 37972), (627, 34520), (660, 32794), (760, 28479), (836, 25890), (863, 25080), (1045, 20712), (1140, 18986), (1254, 17260), (1320, 16397), (1672, 12945), (1726, 12540), (2090, 10356), (2280, 9493), (2508, 8630), (2589, 8360), (3135, 6904), (3452, 6270), (4180, 5178), (4315, 5016)]