64431280

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^2\times {\mathrm{23}}^1\times {\mathrm{97}}^1$

素因数の和:171

約数の個数: 120

約数和(自身を含む): 166676832

約数和(自身を除く): 102245552

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 23, 38, 40, 46, 76, 80, 92, 95, 97, 115, 152, 184, 190, 194, 230, 304, 361, 368, 380, 388, 437, 460, 485, 722, 760, 776, 874, 920, 970, 1444, 1520, 1552, 1748, 1805, 1840, 1843, 1940, 2185, 2231, 2888, 3496, 3610, 3686, 3880, 4370, 4462, 5776, 6992, 7220, 7372, 7760, 8303, 8740, 8924, 9215, 11155, 14440, 14744, 16606, 17480, 17848, 18430, 22310, 28880, 29488, 33212, 34960, 35017, 35696, 36860, 41515, 42389, 44620, 66424, 70034, 73720, 83030, 84778, 89240, 132848, 140068, 147440, 166060, 169556, 175085, 178480, 211945, 280136, 332120, 339112, 350170, 423890, 560272, 664240, 678224, 700340, 805391, 847780, 1400680, 1610782, 1695560, 2801360, 3221564, 3391120, 4026955, 6443128, 8053910, 12886256, 16107820, 32215640, 64431280]

約数ペア:

[(1, 64431280), (2, 32215640), (4, 16107820), (5, 12886256), (8, 8053910), (10, 6443128), (16, 4026955), (19, 3391120), (20, 3221564), (23, 2801360), (38, 1695560), (40, 1610782), (46, 1400680), (76, 847780), (80, 805391), (92, 700340), (95, 678224), (97, 664240), (115, 560272), (152, 423890), (184, 350170), (190, 339112), (194, 332120), (230, 280136), (304, 211945), (361, 178480), (368, 175085), (380, 169556), (388, 166060), (437, 147440), (460, 140068), (485, 132848), (722, 89240), (760, 84778), (776, 83030), (874, 73720), (920, 70034), (970, 66424), (1444, 44620), (1520, 42389), (1552, 41515), (1748, 36860), (1805, 35696), (1840, 35017), (1843, 34960), (1940, 33212), (2185, 29488), (2231, 28880), (2888, 22310), (3496, 18430), (3610, 17848), (3686, 17480), (3880, 16606), (4370, 14744), (4462, 14440), (5776, 11155), (6992, 9215), (7220, 8924), (7372, 8740), (7760, 8303)]