78981660

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{487}}^1$

素因数の和:572

約数の個数: 144

約数和(自身を含む): 258987456

約数和(自身を除く): 180005796

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 17, 18, 20, 30, 34, 36, 45, 51, 53, 60, 68, 85, 90, 102, 106, 153, 159, 170, 180, 204, 212, 255, 265, 306, 318, 340, 477, 487, 510, 530, 612, 636, 765, 795, 901, 954, 974, 1020, 1060, 1461, 1530, 1590, 1802, 1908, 1948, 2385, 2435, 2703, 2922, 3060, 3180, 3604, 4383, 4505, 4770, 4870, 5406, 5844, 7305, 8109, 8279, 8766, 9010, 9540, 9740, 10812, 13515, 14610, 16218, 16558, 17532, 18020, 21915, 24837, 25811, 27030, 29220, 32436, 33116, 40545, 41395, 43830, 49674, 51622, 54060, 74511, 77433, 81090, 82790, 87660, 99348, 103244, 124185, 129055, 149022, 154866, 162180, 165580, 232299, 248370, 258110, 298044, 309732, 372555, 387165, 438787, 464598, 496740, 516220, 745110, 774330, 877574, 929196, 1161495, 1316361, 1490220, 1548660, 1755148, 2193935, 2322990, 2632722, 3949083, 4387870, 4645980, 5265444, 6581805, 7898166, 8775740, 13163610, 15796332, 19745415, 26327220, 39490830, 78981660]

約数ペア:

[(1, 78981660), (2, 39490830), (3, 26327220), (4, 19745415), (5, 15796332), (6, 13163610), (9, 8775740), (10, 7898166), (12, 6581805), (15, 5265444), (17, 4645980), (18, 4387870), (20, 3949083), (30, 2632722), (34, 2322990), (36, 2193935), (45, 1755148), (51, 1548660), (53, 1490220), (60, 1316361), (68, 1161495), (85, 929196), (90, 877574), (102, 774330), (106, 745110), (153, 516220), (159, 496740), (170, 464598), (180, 438787), (204, 387165), (212, 372555), (255, 309732), (265, 298044), (306, 258110), (318, 248370), (340, 232299), (477, 165580), (487, 162180), (510, 154866), (530, 149022), (612, 129055), (636, 124185), (765, 103244), (795, 99348), (901, 87660), (954, 82790), (974, 81090), (1020, 77433), (1060, 74511), (1461, 54060), (1530, 51622), (1590, 49674), (1802, 43830), (1908, 41395), (1948, 40545), (2385, 33116), (2435, 32436), (2703, 29220), (2922, 27030), (3060, 25811), (3180, 24837), (3604, 21915), (4383, 18020), (4505, 17532), (4770, 16558), (4870, 16218), (5406, 14610), (5844, 13515), (7305, 10812), (8109, 9740), (8279, 9540), (8766, 9010)]