81790380

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{467}}^1$

素因数の和:628

約数の個数: 144

約数和(自身を含む): 286191360

約数和(自身を除く): 204400980

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 139, 140, 180, 210, 252, 278, 315, 417, 420, 467, 556, 630, 695, 834, 934, 973, 1251, 1260, 1390, 1401, 1668, 1868, 1946, 2085, 2335, 2502, 2780, 2802, 2919, 3269, 3892, 4170, 4203, 4670, 4865, 5004, 5604, 5838, 6255, 6538, 7005, 8340, 8406, 8757, 9340, 9730, 9807, 11676, 12510, 13076, 14010, 14595, 16345, 16812, 17514, 19460, 19614, 21015, 25020, 28020, 29190, 29421, 32690, 35028, 39228, 42030, 43785, 49035, 58380, 58842, 64913, 65380, 84060, 87570, 98070, 117684, 129826, 147105, 175140, 194739, 196140, 259652, 294210, 324565, 389478, 454391, 584217, 588420, 649130, 778956, 908782, 973695, 1168434, 1298260, 1363173, 1817564, 1947390, 2271955, 2336868, 2726346, 2921085, 3894780, 4089519, 4543910, 5452692, 5842170, 6815865, 8179038, 9087820, 11684340, 13631730, 16358076, 20447595, 27263460, 40895190, 81790380]

約数ペア:

[(1, 81790380), (2, 40895190), (3, 27263460), (4, 20447595), (5, 16358076), (6, 13631730), (7, 11684340), (9, 9087820), (10, 8179038), (12, 6815865), (14, 5842170), (15, 5452692), (18, 4543910), (20, 4089519), (21, 3894780), (28, 2921085), (30, 2726346), (35, 2336868), (36, 2271955), (42, 1947390), (45, 1817564), (60, 1363173), (63, 1298260), (70, 1168434), (84, 973695), (90, 908782), (105, 778956), (126, 649130), (139, 588420), (140, 584217), (180, 454391), (210, 389478), (252, 324565), (278, 294210), (315, 259652), (417, 196140), (420, 194739), (467, 175140), (556, 147105), (630, 129826), (695, 117684), (834, 98070), (934, 87570), (973, 84060), (1251, 65380), (1260, 64913), (1390, 58842), (1401, 58380), (1668, 49035), (1868, 43785), (1946, 42030), (2085, 39228), (2335, 35028), (2502, 32690), (2780, 29421), (2802, 29190), (2919, 28020), (3269, 25020), (3892, 21015), (4170, 19614), (4203, 19460), (4670, 17514), (4865, 16812), (5004, 16345), (5604, 14595), (5838, 14010), (6255, 13076), (6538, 12510), (7005, 11676), (8340, 9807), (8406, 9730), (8757, 9340)]