81656040

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{347}}^1$

素因数の和:451

約数の個数: 128

約数和(自身を含む): 257074560

約数和(自身を除く): 175418520

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 37, 40, 53, 60, 74, 106, 111, 120, 148, 159, 185, 212, 222, 265, 296, 318, 347, 370, 424, 444, 530, 555, 636, 694, 740, 795, 888, 1041, 1060, 1110, 1272, 1388, 1480, 1590, 1735, 1961, 2082, 2120, 2220, 2776, 3180, 3470, 3922, 4164, 4440, 5205, 5883, 6360, 6940, 7844, 8328, 9805, 10410, 11766, 12839, 13880, 15688, 18391, 19610, 20820, 23532, 25678, 29415, 36782, 38517, 39220, 41640, 47064, 51356, 55173, 58830, 64195, 73564, 77034, 78440, 91955, 102712, 110346, 117660, 128390, 147128, 154068, 183910, 192585, 220692, 235320, 256780, 275865, 308136, 367820, 385170, 441384, 513560, 551730, 680467, 735640, 770340, 1103460, 1360934, 1540680, 2041401, 2206920, 2721868, 3402335, 4082802, 5443736, 6804670, 8165604, 10207005, 13609340, 16331208, 20414010, 27218680, 40828020, 81656040]

約数ペア:

[(1, 81656040), (2, 40828020), (3, 27218680), (4, 20414010), (5, 16331208), (6, 13609340), (8, 10207005), (10, 8165604), (12, 6804670), (15, 5443736), (20, 4082802), (24, 3402335), (30, 2721868), (37, 2206920), (40, 2041401), (53, 1540680), (60, 1360934), (74, 1103460), (106, 770340), (111, 735640), (120, 680467), (148, 551730), (159, 513560), (185, 441384), (212, 385170), (222, 367820), (265, 308136), (296, 275865), (318, 256780), (347, 235320), (370, 220692), (424, 192585), (444, 183910), (530, 154068), (555, 147128), (636, 128390), (694, 117660), (740, 110346), (795, 102712), (888, 91955), (1041, 78440), (1060, 77034), (1110, 73564), (1272, 64195), (1388, 58830), (1480, 55173), (1590, 51356), (1735, 47064), (1961, 41640), (2082, 39220), (2120, 38517), (2220, 36782), (2776, 29415), (3180, 25678), (3470, 23532), (3922, 20820), (4164, 19610), (4440, 18391), (5205, 15688), (5883, 13880), (6360, 12839), (6940, 11766), (7844, 10410), (8328, 9805)]