81605880

素因数分解:

$2^3\times 3^4\times 5^1\times {\mathrm{89}}^1\times {\mathrm{283}}^1$

素因数の和:395

約数の個数: 160

約数和(自身を含む): 278348400

約数和(自身を除く): 196742520

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 40, 45, 54, 60, 72, 81, 89, 90, 108, 120, 135, 162, 178, 180, 216, 267, 270, 283, 324, 356, 360, 405, 445, 534, 540, 566, 648, 712, 801, 810, 849, 890, 1068, 1080, 1132, 1335, 1415, 1602, 1620, 1698, 1780, 2136, 2264, 2403, 2547, 2670, 2830, 3204, 3240, 3396, 3560, 4005, 4245, 4806, 5094, 5340, 5660, 6408, 6792, 7209, 7641, 8010, 8490, 9612, 10188, 10680, 11320, 12015, 12735, 14418, 15282, 16020, 16980, 19224, 20376, 22923, 24030, 25187, 25470, 28836, 30564, 32040, 33960, 36045, 38205, 45846, 48060, 50374, 50940, 57672, 61128, 72090, 75561, 76410, 91692, 96120, 100748, 101880, 114615, 125935, 144180, 151122, 152820, 183384, 201496, 226683, 229230, 251870, 288360, 302244, 305640, 377805, 453366, 458460, 503740, 604488, 680049, 755610, 906732, 916920, 1007480, 1133415, 1360098, 1511220, 1813464, 2040147, 2266830, 2720196, 3022440, 3400245, 4080294, 4533660, 5440392, 6800490, 8160588, 9067320, 10200735, 13600980, 16321176, 20401470, 27201960, 40802940, 81605880]

約数ペア:

[(1, 81605880), (2, 40802940), (3, 27201960), (4, 20401470), (5, 16321176), (6, 13600980), (8, 10200735), (9, 9067320), (10, 8160588), (12, 6800490), (15, 5440392), (18, 4533660), (20, 4080294), (24, 3400245), (27, 3022440), (30, 2720196), (36, 2266830), (40, 2040147), (45, 1813464), (54, 1511220), (60, 1360098), (72, 1133415), (81, 1007480), (89, 916920), (90, 906732), (108, 755610), (120, 680049), (135, 604488), (162, 503740), (178, 458460), (180, 453366), (216, 377805), (267, 305640), (270, 302244), (283, 288360), (324, 251870), (356, 229230), (360, 226683), (405, 201496), (445, 183384), (534, 152820), (540, 151122), (566, 144180), (648, 125935), (712, 114615), (801, 101880), (810, 100748), (849, 96120), (890, 91692), (1068, 76410), (1080, 75561), (1132, 72090), (1335, 61128), (1415, 57672), (1602, 50940), (1620, 50374), (1698, 48060), (1780, 45846), (2136, 38205), (2264, 36045), (2403, 33960), (2547, 32040), (2670, 30564), (2830, 28836), (3204, 25470), (3240, 25187), (3396, 24030), (3560, 22923), (4005, 20376), (4245, 19224), (4806, 16980), (5094, 16020), (5340, 15282), (5660, 14418), (6408, 12735), (6792, 12015), (7209, 11320), (7641, 10680), (8010, 10188), (8490, 9612)]