28209636

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{109}}^1$

素因数の和:218

約数の個数: 144

約数和(自身を含む): 89689600

約数和(自身を除く): 61479964

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 13, 14, 18, 21, 26, 28, 36, 39, 42, 52, 63, 78, 79, 84, 91, 109, 117, 126, 156, 158, 182, 218, 234, 237, 252, 273, 316, 327, 364, 436, 468, 474, 546, 553, 654, 711, 763, 819, 948, 981, 1027, 1092, 1106, 1308, 1417, 1422, 1526, 1638, 1659, 1962, 2054, 2212, 2289, 2834, 2844, 3052, 3081, 3276, 3318, 3924, 4108, 4251, 4578, 4977, 5668, 6162, 6636, 6867, 7189, 8502, 8611, 9156, 9243, 9919, 9954, 12324, 12753, 13734, 14378, 17004, 17222, 18486, 19838, 19908, 21567, 25506, 25833, 27468, 28756, 29757, 34444, 36972, 39676, 43134, 51012, 51666, 59514, 60277, 64701, 77499, 86268, 89271, 103332, 111943, 119028, 120554, 129402, 154998, 178542, 180831, 223886, 241108, 258804, 309996, 335829, 357084, 361662, 447772, 542493, 671658, 723324, 783601, 1007487, 1084986, 1343316, 1567202, 2014974, 2169972, 2350803, 3134404, 4029948, 4701606, 7052409, 9403212, 14104818, 28209636]

約数ペア:

[(1, 28209636), (2, 14104818), (3, 9403212), (4, 7052409), (6, 4701606), (7, 4029948), (9, 3134404), (12, 2350803), (13, 2169972), (14, 2014974), (18, 1567202), (21, 1343316), (26, 1084986), (28, 1007487), (36, 783601), (39, 723324), (42, 671658), (52, 542493), (63, 447772), (78, 361662), (79, 357084), (84, 335829), (91, 309996), (109, 258804), (117, 241108), (126, 223886), (156, 180831), (158, 178542), (182, 154998), (218, 129402), (234, 120554), (237, 119028), (252, 111943), (273, 103332), (316, 89271), (327, 86268), (364, 77499), (436, 64701), (468, 60277), (474, 59514), (546, 51666), (553, 51012), (654, 43134), (711, 39676), (763, 36972), (819, 34444), (948, 29757), (981, 28756), (1027, 27468), (1092, 25833), (1106, 25506), (1308, 21567), (1417, 19908), (1422, 19838), (1526, 18486), (1638, 17222), (1659, 17004), (1962, 14378), (2054, 13734), (2212, 12753), (2289, 12324), (2834, 9954), (2844, 9919), (3052, 9243), (3081, 9156), (3276, 8611), (3318, 8502), (3924, 7189), (4108, 6867), (4251, 6636), (4578, 6162), (4977, 5668)]