20394560

素因数分解:

$2^6\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{163}}^1$

素因数の和:220

約数の個数: 112

約数和(自身を含む): 53986176

約数和(自身を除く): 33591616

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, 163, 170, 184, 230, 272, 320, 326, 340, 368, 391, 460, 544, 652, 680, 736, 782, 815, 920, 1088, 1304, 1360, 1472, 1564, 1630, 1840, 1955, 2608, 2720, 2771, 3128, 3260, 3680, 3749, 3910, 5216, 5440, 5542, 6256, 6520, 7360, 7498, 7820, 10432, 11084, 12512, 13040, 13855, 14996, 15640, 18745, 22168, 25024, 26080, 27710, 29992, 31280, 37490, 44336, 52160, 55420, 59984, 62560, 63733, 74980, 88672, 110840, 119968, 125120, 127466, 149960, 177344, 221680, 239936, 254932, 299920, 318665, 443360, 509864, 599840, 637330, 886720, 1019728, 1199680, 1274660, 2039456, 2549320, 4078912, 5098640, 10197280, 20394560]

約数ペア:

[(1, 20394560), (2, 10197280), (4, 5098640), (5, 4078912), (8, 2549320), (10, 2039456), (16, 1274660), (17, 1199680), (20, 1019728), (23, 886720), (32, 637330), (34, 599840), (40, 509864), (46, 443360), (64, 318665), (68, 299920), (80, 254932), (85, 239936), (92, 221680), (115, 177344), (136, 149960), (160, 127466), (163, 125120), (170, 119968), (184, 110840), (230, 88672), (272, 74980), (320, 63733), (326, 62560), (340, 59984), (368, 55420), (391, 52160), (460, 44336), (544, 37490), (652, 31280), (680, 29992), (736, 27710), (782, 26080), (815, 25024), (920, 22168), (1088, 18745), (1304, 15640), (1360, 14996), (1472, 13855), (1564, 13040), (1630, 12512), (1840, 11084), (1955, 10432), (2608, 7820), (2720, 7498), (2771, 7360), (3128, 6520), (3260, 6256), (3680, 5542), (3749, 5440), (3910, 5216)]