19553560

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{1213}}^1$

素因数の和:1268

約数の個数: 64

約数和(自身を含む): 48948480

約数和(自身を除く): 29394920

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 31, 40, 52, 62, 65, 104, 124, 130, 155, 248, 260, 310, 403, 520, 620, 806, 1213, 1240, 1612, 2015, 2426, 3224, 4030, 4852, 6065, 8060, 9704, 12130, 15769, 16120, 24260, 31538, 37603, 48520, 63076, 75206, 78845, 126152, 150412, 157690, 188015, 300824, 315380, 376030, 488839, 630760, 752060, 977678, 1504120, 1955356, 2444195, 3910712, 4888390, 9776780, 19553560]

約数ペア:

[(1, 19553560), (2, 9776780), (4, 4888390), (5, 3910712), (8, 2444195), (10, 1955356), (13, 1504120), (20, 977678), (26, 752060), (31, 630760), (40, 488839), (52, 376030), (62, 315380), (65, 300824), (104, 188015), (124, 157690), (130, 150412), (155, 126152), (248, 78845), (260, 75206), (310, 63076), (403, 48520), (520, 37603), (620, 31538), (806, 24260), (1213, 16120), (1240, 15769), (1612, 12130), (2015, 9704), (2426, 8060), (3224, 6065), (4030, 4852)]