20694480

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{23}}^2\times {\mathrm{163}}^1$

素因数の和:225

約数の個数: 120

約数和(自身を含む): 67474848

約数和(自身を除く): 46780368

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 23, 24, 30, 40, 46, 48, 60, 69, 80, 92, 115, 120, 138, 163, 184, 230, 240, 276, 326, 345, 368, 460, 489, 529, 552, 652, 690, 815, 920, 978, 1058, 1104, 1304, 1380, 1587, 1630, 1840, 1956, 2116, 2445, 2608, 2645, 2760, 3174, 3260, 3749, 3912, 4232, 4890, 5290, 5520, 6348, 6520, 7498, 7824, 7935, 8464, 9780, 10580, 11247, 12696, 13040, 14996, 15870, 18745, 19560, 21160, 22494, 25392, 29992, 31740, 37490, 39120, 42320, 44988, 56235, 59984, 63480, 74980, 86227, 89976, 112470, 126960, 149960, 172454, 179952, 224940, 258681, 299920, 344908, 431135, 449880, 517362, 689816, 862270, 899760, 1034724, 1293405, 1379632, 1724540, 2069448, 2586810, 3449080, 4138896, 5173620, 6898160, 10347240, 20694480]

約数ペア:

[(1, 20694480), (2, 10347240), (3, 6898160), (4, 5173620), (5, 4138896), (6, 3449080), (8, 2586810), (10, 2069448), (12, 1724540), (15, 1379632), (16, 1293405), (20, 1034724), (23, 899760), (24, 862270), (30, 689816), (40, 517362), (46, 449880), (48, 431135), (60, 344908), (69, 299920), (80, 258681), (92, 224940), (115, 179952), (120, 172454), (138, 149960), (163, 126960), (184, 112470), (230, 89976), (240, 86227), (276, 74980), (326, 63480), (345, 59984), (368, 56235), (460, 44988), (489, 42320), (529, 39120), (552, 37490), (652, 31740), (690, 29992), (815, 25392), (920, 22494), (978, 21160), (1058, 19560), (1104, 18745), (1304, 15870), (1380, 14996), (1587, 13040), (1630, 12696), (1840, 11247), (1956, 10580), (2116, 9780), (2445, 8464), (2608, 7935), (2645, 7824), (2760, 7498), (3174, 6520), (3260, 6348), (3749, 5520), (3912, 5290), (4232, 4890)]