20587760

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{167}}^1$

素因数の和:270

約数の個数: 80

約数和(自身を含む): 50996736

約数和(自身を除く): 30408976

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 40, 46, 67, 80, 92, 115, 134, 167, 184, 230, 268, 334, 335, 368, 460, 536, 668, 670, 835, 920, 1072, 1336, 1340, 1541, 1670, 1840, 2672, 2680, 3082, 3340, 3841, 5360, 6164, 6680, 7682, 7705, 11189, 12328, 13360, 15364, 15410, 19205, 22378, 24656, 30728, 30820, 38410, 44756, 55945, 61456, 61640, 76820, 89512, 111890, 123280, 153640, 179024, 223780, 257347, 307280, 447560, 514694, 895120, 1029388, 1286735, 2058776, 2573470, 4117552, 5146940, 10293880, 20587760]

約数ペア:

[(1, 20587760), (2, 10293880), (4, 5146940), (5, 4117552), (8, 2573470), (10, 2058776), (16, 1286735), (20, 1029388), (23, 895120), (40, 514694), (46, 447560), (67, 307280), (80, 257347), (92, 223780), (115, 179024), (134, 153640), (167, 123280), (184, 111890), (230, 89512), (268, 76820), (334, 61640), (335, 61456), (368, 55945), (460, 44756), (536, 38410), (668, 30820), (670, 30728), (835, 24656), (920, 22378), (1072, 19205), (1336, 15410), (1340, 15364), (1541, 13360), (1670, 12328), (1840, 11189), (2672, 7705), (2680, 7682), (3082, 6680), (3340, 6164), (3841, 5360)]