81795420

素因数分解:

$2^2\times 3^4\times 5^1\times 7^1\times {\mathrm{7213}}^1$

素因数の和:7241

約数の個数: 120

約数和(自身を含む): 293292384

約数和(自身を除く): 211496964

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 35, 36, 42, 45, 54, 60, 63, 70, 81, 84, 90, 105, 108, 126, 135, 140, 162, 180, 189, 210, 252, 270, 315, 324, 378, 405, 420, 540, 567, 630, 756, 810, 945, 1134, 1260, 1620, 1890, 2268, 2835, 3780, 5670, 7213, 11340, 14426, 21639, 28852, 36065, 43278, 50491, 64917, 72130, 86556, 100982, 108195, 129834, 144260, 151473, 194751, 201964, 216390, 252455, 259668, 302946, 324585, 389502, 432780, 454419, 504910, 584253, 605892, 649170, 757365, 779004, 908838, 973755, 1009820, 1168506, 1298340, 1363257, 1514730, 1817676, 1947510, 2272095, 2337012, 2726514, 2921265, 3029460, 3895020, 4089771, 4544190, 5453028, 5842530, 6816285, 8179542, 9088380, 11685060, 13632570, 16359084, 20448855, 27265140, 40897710, 81795420]

約数ペア:

[(1, 81795420), (2, 40897710), (3, 27265140), (4, 20448855), (5, 16359084), (6, 13632570), (7, 11685060), (9, 9088380), (10, 8179542), (12, 6816285), (14, 5842530), (15, 5453028), (18, 4544190), (20, 4089771), (21, 3895020), (27, 3029460), (28, 2921265), (30, 2726514), (35, 2337012), (36, 2272095), (42, 1947510), (45, 1817676), (54, 1514730), (60, 1363257), (63, 1298340), (70, 1168506), (81, 1009820), (84, 973755), (90, 908838), (105, 779004), (108, 757365), (126, 649170), (135, 605892), (140, 584253), (162, 504910), (180, 454419), (189, 432780), (210, 389502), (252, 324585), (270, 302946), (315, 259668), (324, 252455), (378, 216390), (405, 201964), (420, 194751), (540, 151473), (567, 144260), (630, 129834), (756, 108195), (810, 100982), (945, 86556), (1134, 72130), (1260, 64917), (1620, 50491), (1890, 43278), (2268, 36065), (2835, 28852), (3780, 21639), (5670, 14426), (7213, 11340)]