21827080

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{113}}^1\times {\mathrm{439}}^1$

素因数の和:574

約数の個数: 64

約数和(自身を含む): 54172800

約数和(自身を除く): 32345720

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 113, 220, 226, 439, 440, 452, 565, 878, 904, 1130, 1243, 1756, 2195, 2260, 2486, 3512, 4390, 4520, 4829, 4972, 6215, 8780, 9658, 9944, 12430, 17560, 19316, 24145, 24860, 38632, 48290, 49607, 49720, 96580, 99214, 193160, 198428, 248035, 396856, 496070, 545677, 992140, 1091354, 1984280, 2182708, 2728385, 4365416, 5456770, 10913540, 21827080]

約数ペア:

[(1, 21827080), (2, 10913540), (4, 5456770), (5, 4365416), (8, 2728385), (10, 2182708), (11, 1984280), (20, 1091354), (22, 992140), (40, 545677), (44, 496070), (55, 396856), (88, 248035), (110, 198428), (113, 193160), (220, 99214), (226, 96580), (439, 49720), (440, 49607), (452, 48290), (565, 38632), (878, 24860), (904, 24145), (1130, 19316), (1243, 17560), (1756, 12430), (2195, 9944), (2260, 9658), (2486, 8780), (3512, 6215), (4390, 4972), (4520, 4829)]