21645760

素因数分解:

$2^6\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{173}}^1$

素因数の和:230

約数の個数: 112

約数和(自身を含む): 57278016

約数和(自身を除く): 35632256

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 23, 32, 34, 40, 46, 64, 68, 80, 85, 92, 115, 136, 160, 170, 173, 184, 230, 272, 320, 340, 346, 368, 391, 460, 544, 680, 692, 736, 782, 865, 920, 1088, 1360, 1384, 1472, 1564, 1730, 1840, 1955, 2720, 2768, 2941, 3128, 3460, 3680, 3910, 3979, 5440, 5536, 5882, 6256, 6920, 7360, 7820, 7958, 11072, 11764, 12512, 13840, 14705, 15640, 15916, 19895, 23528, 25024, 27680, 29410, 31280, 31832, 39790, 47056, 55360, 58820, 62560, 63664, 67643, 79580, 94112, 117640, 125120, 127328, 135286, 159160, 188224, 235280, 254656, 270572, 318320, 338215, 470560, 541144, 636640, 676430, 941120, 1082288, 1273280, 1352860, 2164576, 2705720, 4329152, 5411440, 10822880, 21645760]

約数ペア:

[(1, 21645760), (2, 10822880), (4, 5411440), (5, 4329152), (8, 2705720), (10, 2164576), (16, 1352860), (17, 1273280), (20, 1082288), (23, 941120), (32, 676430), (34, 636640), (40, 541144), (46, 470560), (64, 338215), (68, 318320), (80, 270572), (85, 254656), (92, 235280), (115, 188224), (136, 159160), (160, 135286), (170, 127328), (173, 125120), (184, 117640), (230, 94112), (272, 79580), (320, 67643), (340, 63664), (346, 62560), (368, 58820), (391, 55360), (460, 47056), (544, 39790), (680, 31832), (692, 31280), (736, 29410), (782, 27680), (865, 25024), (920, 23528), (1088, 19895), (1360, 15916), (1384, 15640), (1472, 14705), (1564, 13840), (1730, 12512), (1840, 11764), (1955, 11072), (2720, 7958), (2768, 7820), (2941, 7360), (3128, 6920), (3460, 6256), (3680, 5882), (3910, 5536), (3979, 5440)]