81423720

素因数分解:

$2^3\times 3^2\times 5^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{409}}^1$

素因数の和:512

約数の個数: 192

約数和(自身を含む): 307008000

約数和(自身を除く): 225584280

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 28, 30, 35, 36, 40, 42, 45, 56, 60, 63, 70, 72, 79, 84, 90, 105, 120, 126, 140, 158, 168, 180, 210, 237, 252, 280, 315, 316, 360, 395, 409, 420, 474, 504, 553, 630, 632, 711, 790, 818, 840, 948, 1106, 1185, 1227, 1260, 1422, 1580, 1636, 1659, 1896, 2045, 2212, 2370, 2454, 2520, 2765, 2844, 2863, 3160, 3272, 3318, 3555, 3681, 4090, 4424, 4740, 4908, 4977, 5530, 5688, 5726, 6135, 6636, 7110, 7362, 8180, 8295, 8589, 9480, 9816, 9954, 11060, 11452, 12270, 13272, 14220, 14315, 14724, 16360, 16590, 17178, 18405, 19908, 22120, 22904, 24540, 24885, 25767, 28440, 28630, 29448, 32311, 33180, 34356, 36810, 39816, 42945, 49080, 49770, 51534, 57260, 64622, 66360, 68712, 73620, 85890, 96933, 99540, 103068, 114520, 128835, 129244, 147240, 161555, 171780, 193866, 199080, 206136, 226177, 257670, 258488, 290799, 323110, 343560, 387732, 452354, 484665, 515340, 581598, 646220, 678531, 775464, 904708, 969330, 1030680, 1130885, 1163196, 1292440, 1357062, 1453995, 1809416, 1938660, 2035593, 2261770, 2326392, 2714124, 2907990, 3392655, 3877320, 4071186, 4523540, 5428248, 5815980, 6785310, 8142372, 9047080, 10177965, 11631960, 13570620, 16284744, 20355930, 27141240, 40711860, 81423720]

約数ペア:

[(1, 81423720), (2, 40711860), (3, 27141240), (4, 20355930), (5, 16284744), (6, 13570620), (7, 11631960), (8, 10177965), (9, 9047080), (10, 8142372), (12, 6785310), (14, 5815980), (15, 5428248), (18, 4523540), (20, 4071186), (21, 3877320), (24, 3392655), (28, 2907990), (30, 2714124), (35, 2326392), (36, 2261770), (40, 2035593), (42, 1938660), (45, 1809416), (56, 1453995), (60, 1357062), (63, 1292440), (70, 1163196), (72, 1130885), (79, 1030680), (84, 969330), (90, 904708), (105, 775464), (120, 678531), (126, 646220), (140, 581598), (158, 515340), (168, 484665), (180, 452354), (210, 387732), (237, 343560), (252, 323110), (280, 290799), (315, 258488), (316, 257670), (360, 226177), (395, 206136), (409, 199080), (420, 193866), (474, 171780), (504, 161555), (553, 147240), (630, 129244), (632, 128835), (711, 114520), (790, 103068), (818, 99540), (840, 96933), (948, 85890), (1106, 73620), (1185, 68712), (1227, 66360), (1260, 64622), (1422, 57260), (1580, 51534), (1636, 49770), (1659, 49080), (1896, 42945), (2045, 39816), (2212, 36810), (2370, 34356), (2454, 33180), (2520, 32311), (2765, 29448), (2844, 28630), (2863, 28440), (3160, 25767), (3272, 24885), (3318, 24540), (3555, 22904), (3681, 22120), (4090, 19908), (4424, 18405), (4740, 17178), (4908, 16590), (4977, 16360), (5530, 14724), (5688, 14315), (5726, 14220), (6135, 13272), (6636, 12270), (7110, 11452), (7362, 11060), (8180, 9954), (8295, 9816), (8589, 9480)]