81305460

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{479}}^1$

素因数の和:558

約数の個数: 144

約数和(自身を含む): 264176640

約数和(自身を除く): 182871180

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 23, 30, 36, 41, 45, 46, 60, 69, 82, 90, 92, 115, 123, 138, 164, 180, 205, 207, 230, 246, 276, 345, 369, 410, 414, 460, 479, 492, 615, 690, 738, 820, 828, 943, 958, 1035, 1230, 1380, 1437, 1476, 1845, 1886, 1916, 2070, 2395, 2460, 2829, 2874, 3690, 3772, 4140, 4311, 4715, 4790, 5658, 5748, 7185, 7380, 8487, 8622, 9430, 9580, 11017, 11316, 14145, 14370, 16974, 17244, 18860, 19639, 21555, 22034, 28290, 28740, 33051, 33948, 39278, 42435, 43110, 44068, 55085, 56580, 58917, 66102, 78556, 84870, 86220, 98195, 99153, 110170, 117834, 132204, 165255, 169740, 176751, 196390, 198306, 220340, 235668, 294585, 330510, 353502, 392780, 396612, 451697, 495765, 589170, 661020, 707004, 883755, 903394, 991530, 1178340, 1355091, 1767510, 1806788, 1983060, 2258485, 2710182, 3535020, 4065273, 4516970, 5420364, 6775455, 8130546, 9033940, 13550910, 16261092, 20326365, 27101820, 40652730, 81305460]

約数ペア:

[(1, 81305460), (2, 40652730), (3, 27101820), (4, 20326365), (5, 16261092), (6, 13550910), (9, 9033940), (10, 8130546), (12, 6775455), (15, 5420364), (18, 4516970), (20, 4065273), (23, 3535020), (30, 2710182), (36, 2258485), (41, 1983060), (45, 1806788), (46, 1767510), (60, 1355091), (69, 1178340), (82, 991530), (90, 903394), (92, 883755), (115, 707004), (123, 661020), (138, 589170), (164, 495765), (180, 451697), (205, 396612), (207, 392780), (230, 353502), (246, 330510), (276, 294585), (345, 235668), (369, 220340), (410, 198306), (414, 196390), (460, 176751), (479, 169740), (492, 165255), (615, 132204), (690, 117834), (738, 110170), (820, 99153), (828, 98195), (943, 86220), (958, 84870), (1035, 78556), (1230, 66102), (1380, 58917), (1437, 56580), (1476, 55085), (1845, 44068), (1886, 43110), (1916, 42435), (2070, 39278), (2395, 33948), (2460, 33051), (2829, 28740), (2874, 28290), (3690, 22034), (3772, 21555), (4140, 19639), (4311, 18860), (4715, 17244), (4790, 16974), (5658, 14370), (5748, 14145), (7185, 11316), (7380, 11017), (8487, 9580), (8622, 9430)]