28105840

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{1619}}^1$

素因数の和:1670

約数の個数: 80

約数和(自身を含む): 77137920

約数和(自身を除く): 49032080

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 31, 35, 40, 56, 62, 70, 80, 112, 124, 140, 155, 217, 248, 280, 310, 434, 496, 560, 620, 868, 1085, 1240, 1619, 1736, 2170, 2480, 3238, 3472, 4340, 6476, 8095, 8680, 11333, 12952, 16190, 17360, 22666, 25904, 32380, 45332, 50189, 56665, 64760, 90664, 100378, 113330, 129520, 181328, 200756, 226660, 250945, 351323, 401512, 453320, 501890, 702646, 803024, 906640, 1003780, 1405292, 1756615, 2007560, 2810584, 3513230, 4015120, 5621168, 7026460, 14052920, 28105840]

約数ペア:

[(1, 28105840), (2, 14052920), (4, 7026460), (5, 5621168), (7, 4015120), (8, 3513230), (10, 2810584), (14, 2007560), (16, 1756615), (20, 1405292), (28, 1003780), (31, 906640), (35, 803024), (40, 702646), (56, 501890), (62, 453320), (70, 401512), (80, 351323), (112, 250945), (124, 226660), (140, 200756), (155, 181328), (217, 129520), (248, 113330), (280, 100378), (310, 90664), (434, 64760), (496, 56665), (560, 50189), (620, 45332), (868, 32380), (1085, 25904), (1240, 22666), (1619, 17360), (1736, 16190), (2170, 12952), (2480, 11333), (3238, 8680), (3472, 8095), (4340, 6476)]