278523540

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{229}}^1\times {\mathrm{233}}^1$

素因数の和:506

約数の個数: 144

約数和(自身を含む): 881571600

約数和(自身を除く): 603048060

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 29, 30, 36, 45, 58, 60, 87, 90, 116, 145, 174, 180, 229, 233, 261, 290, 348, 435, 458, 466, 522, 580, 687, 699, 870, 916, 932, 1044, 1145, 1165, 1305, 1374, 1398, 1740, 2061, 2097, 2290, 2330, 2610, 2748, 2796, 3435, 3495, 4122, 4194, 4580, 4660, 5220, 6641, 6757, 6870, 6990, 8244, 8388, 10305, 10485, 13282, 13514, 13740, 13980, 19923, 20271, 20610, 20970, 26564, 27028, 33205, 33785, 39846, 40542, 41220, 41940, 53357, 59769, 60813, 66410, 67570, 79692, 81084, 99615, 101355, 106714, 119538, 121626, 132820, 135140, 160071, 199230, 202710, 213428, 239076, 243252, 266785, 298845, 304065, 320142, 398460, 405420, 480213, 533570, 597690, 608130, 640284, 800355, 960426, 1067140, 1195380, 1216260, 1547353, 1600710, 1920852, 2401065, 3094706, 3201420, 4642059, 4802130, 6189412, 7736765, 9284118, 9604260, 13926177, 15473530, 18568236, 23210295, 27852354, 30947060, 46420590, 55704708, 69630885, 92841180, 139261770, 278523540]

約数ペア:

[(1, 278523540), (2, 139261770), (3, 92841180), (4, 69630885), (5, 55704708), (6, 46420590), (9, 30947060), (10, 27852354), (12, 23210295), (15, 18568236), (18, 15473530), (20, 13926177), (29, 9604260), (30, 9284118), (36, 7736765), (45, 6189412), (58, 4802130), (60, 4642059), (87, 3201420), (90, 3094706), (116, 2401065), (145, 1920852), (174, 1600710), (180, 1547353), (229, 1216260), (233, 1195380), (261, 1067140), (290, 960426), (348, 800355), (435, 640284), (458, 608130), (466, 597690), (522, 533570), (580, 480213), (687, 405420), (699, 398460), (870, 320142), (916, 304065), (932, 298845), (1044, 266785), (1145, 243252), (1165, 239076), (1305, 213428), (1374, 202710), (1398, 199230), (1740, 160071), (2061, 135140), (2097, 132820), (2290, 121626), (2330, 119538), (2610, 106714), (2748, 101355), (2796, 99615), (3435, 81084), (3495, 79692), (4122, 67570), (4194, 66410), (4580, 60813), (4660, 59769), (5220, 53357), (6641, 41940), (6757, 41220), (6870, 40542), (6990, 39846), (8244, 33785), (8388, 33205), (10305, 27028), (10485, 26564), (13282, 20970), (13514, 20610), (13740, 20271), (13980, 19923)]