21777120

素因数分解:

$2^5\times 3^3\times 5^1\times {\mathrm{71}}^2$

素因数の和:166

約数の個数: 144

約数和(自身を含む): 77308560

約数和(自身を除く): 55531440

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 32, 36, 40, 45, 48, 54, 60, 71, 72, 80, 90, 96, 108, 120, 135, 142, 144, 160, 180, 213, 216, 240, 270, 284, 288, 355, 360, 426, 432, 480, 540, 568, 639, 710, 720, 852, 864, 1065, 1080, 1136, 1278, 1420, 1440, 1704, 1917, 2130, 2160, 2272, 2556, 2840, 3195, 3408, 3834, 4260, 4320, 5041, 5112, 5680, 6390, 6816, 7668, 8520, 9585, 10082, 10224, 11360, 12780, 15123, 15336, 17040, 19170, 20164, 20448, 25205, 25560, 30246, 30672, 34080, 38340, 40328, 45369, 50410, 51120, 60492, 61344, 75615, 76680, 80656, 90738, 100820, 102240, 120984, 136107, 151230, 153360, 161312, 181476, 201640, 226845, 241968, 272214, 302460, 306720, 362952, 403280, 453690, 483936, 544428, 604920, 680535, 725904, 806560, 907380, 1088856, 1209840, 1361070, 1451808, 1814760, 2177712, 2419680, 2722140, 3629520, 4355424, 5444280, 7259040, 10888560, 21777120]

約数ペア:

[(1, 21777120), (2, 10888560), (3, 7259040), (4, 5444280), (5, 4355424), (6, 3629520), (8, 2722140), (9, 2419680), (10, 2177712), (12, 1814760), (15, 1451808), (16, 1361070), (18, 1209840), (20, 1088856), (24, 907380), (27, 806560), (30, 725904), (32, 680535), (36, 604920), (40, 544428), (45, 483936), (48, 453690), (54, 403280), (60, 362952), (71, 306720), (72, 302460), (80, 272214), (90, 241968), (96, 226845), (108, 201640), (120, 181476), (135, 161312), (142, 153360), (144, 151230), (160, 136107), (180, 120984), (213, 102240), (216, 100820), (240, 90738), (270, 80656), (284, 76680), (288, 75615), (355, 61344), (360, 60492), (426, 51120), (432, 50410), (480, 45369), (540, 40328), (568, 38340), (639, 34080), (710, 30672), (720, 30246), (852, 25560), (864, 25205), (1065, 20448), (1080, 20164), (1136, 19170), (1278, 17040), (1420, 15336), (1440, 15123), (1704, 12780), (1917, 11360), (2130, 10224), (2160, 10082), (2272, 9585), (2556, 8520), (2840, 7668), (3195, 6816), (3408, 6390), (3834, 5680), (4260, 5112), (4320, 5041)]