28987140

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{5309}}^1$

素因数の和:5341

約数の個数: 96

約数和(自身を含む): 99912960

約数和(自身を除く): 70925820

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 13, 14, 15, 20, 21, 26, 28, 30, 35, 39, 42, 52, 60, 65, 70, 78, 84, 91, 105, 130, 140, 156, 182, 195, 210, 260, 273, 364, 390, 420, 455, 546, 780, 910, 1092, 1365, 1820, 2730, 5309, 5460, 10618, 15927, 21236, 26545, 31854, 37163, 53090, 63708, 69017, 74326, 79635, 106180, 111489, 138034, 148652, 159270, 185815, 207051, 222978, 276068, 318540, 345085, 371630, 414102, 445956, 483119, 557445, 690170, 743260, 828204, 966238, 1035255, 1114890, 1380340, 1449357, 1932476, 2070510, 2229780, 2415595, 2898714, 4141020, 4831190, 5797428, 7246785, 9662380, 14493570, 28987140]

約数ペア:

[(1, 28987140), (2, 14493570), (3, 9662380), (4, 7246785), (5, 5797428), (6, 4831190), (7, 4141020), (10, 2898714), (12, 2415595), (13, 2229780), (14, 2070510), (15, 1932476), (20, 1449357), (21, 1380340), (26, 1114890), (28, 1035255), (30, 966238), (35, 828204), (39, 743260), (42, 690170), (52, 557445), (60, 483119), (65, 445956), (70, 414102), (78, 371630), (84, 345085), (91, 318540), (105, 276068), (130, 222978), (140, 207051), (156, 185815), (182, 159270), (195, 148652), (210, 138034), (260, 111489), (273, 106180), (364, 79635), (390, 74326), (420, 69017), (455, 63708), (546, 53090), (780, 37163), (910, 31854), (1092, 26545), (1365, 21236), (1820, 15927), (2730, 10618), (5309, 5460)]