19560840

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{12539}}^1$

素因数の和:12566

約数の個数: 64

約数和(自身を含む): 63201600

約数和(自身を除く): 43640760

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 52, 60, 65, 78, 104, 120, 130, 156, 195, 260, 312, 390, 520, 780, 1560, 12539, 25078, 37617, 50156, 62695, 75234, 100312, 125390, 150468, 163007, 188085, 250780, 300936, 326014, 376170, 489021, 501560, 652028, 752340, 815035, 978042, 1304056, 1504680, 1630070, 1956084, 2445105, 3260140, 3912168, 4890210, 6520280, 9780420, 19560840]

約数ペア:

[(1, 19560840), (2, 9780420), (3, 6520280), (4, 4890210), (5, 3912168), (6, 3260140), (8, 2445105), (10, 1956084), (12, 1630070), (13, 1504680), (15, 1304056), (20, 978042), (24, 815035), (26, 752340), (30, 652028), (39, 501560), (40, 489021), (52, 376170), (60, 326014), (65, 300936), (78, 250780), (104, 188085), (120, 163007), (130, 150468), (156, 125390), (195, 100312), (260, 75234), (312, 62695), (390, 50156), (520, 37617), (780, 25078), (1560, 12539)]