81385560

素因数分解:

$2^3\times 3^6\times 5^1\times {\mathrm{2791}}^1$

素因数の和:2820

約数の個数: 112

約数和(自身を含む): 274649040

約数和(自身を除く): 193263480

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, 90, 108, 120, 135, 162, 180, 216, 243, 270, 324, 360, 405, 486, 540, 648, 729, 810, 972, 1080, 1215, 1458, 1620, 1944, 2430, 2791, 2916, 3240, 3645, 4860, 5582, 5832, 7290, 8373, 9720, 11164, 13955, 14580, 16746, 22328, 25119, 27910, 29160, 33492, 41865, 50238, 55820, 66984, 75357, 83730, 100476, 111640, 125595, 150714, 167460, 200952, 226071, 251190, 301428, 334920, 376785, 452142, 502380, 602856, 678213, 753570, 904284, 1004760, 1130355, 1356426, 1507140, 1808568, 2034639, 2260710, 2712852, 3014280, 3391065, 4069278, 4521420, 5425704, 6782130, 8138556, 9042840, 10173195, 13564260, 16277112, 20346390, 27128520, 40692780, 81385560]

約数ペア:

[(1, 81385560), (2, 40692780), (3, 27128520), (4, 20346390), (5, 16277112), (6, 13564260), (8, 10173195), (9, 9042840), (10, 8138556), (12, 6782130), (15, 5425704), (18, 4521420), (20, 4069278), (24, 3391065), (27, 3014280), (30, 2712852), (36, 2260710), (40, 2034639), (45, 1808568), (54, 1507140), (60, 1356426), (72, 1130355), (81, 1004760), (90, 904284), (108, 753570), (120, 678213), (135, 602856), (162, 502380), (180, 452142), (216, 376785), (243, 334920), (270, 301428), (324, 251190), (360, 226071), (405, 200952), (486, 167460), (540, 150714), (648, 125595), (729, 111640), (810, 100476), (972, 83730), (1080, 75357), (1215, 66984), (1458, 55820), (1620, 50238), (1944, 41865), (2430, 33492), (2791, 29160), (2916, 27910), (3240, 25119), (3645, 22328), (4860, 16746), (5582, 14580), (5832, 13955), (7290, 11164), (8373, 9720)]