19747520

素因数分解:

$2^6\times 5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{101}}^1$

素因数の和:178

約数の個数: 112

約数和(自身を含む): 52230528

約数和(自身を除く): 32483008

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 47, 52, 64, 65, 80, 94, 101, 104, 130, 160, 188, 202, 208, 235, 260, 320, 376, 404, 416, 470, 505, 520, 611, 752, 808, 832, 940, 1010, 1040, 1222, 1313, 1504, 1616, 1880, 2020, 2080, 2444, 2626, 3008, 3055, 3232, 3760, 4040, 4160, 4747, 4888, 5252, 6110, 6464, 6565, 7520, 8080, 9494, 9776, 10504, 12220, 13130, 15040, 16160, 18988, 19552, 21008, 23735, 24440, 26260, 32320, 37976, 39104, 42016, 47470, 48880, 52520, 61711, 75952, 84032, 94940, 97760, 105040, 123422, 151904, 189880, 195520, 210080, 246844, 303808, 308555, 379760, 420160, 493688, 617110, 759520, 987376, 1234220, 1519040, 1974752, 2468440, 3949504, 4936880, 9873760, 19747520]

約数ペア:

[(1, 19747520), (2, 9873760), (4, 4936880), (5, 3949504), (8, 2468440), (10, 1974752), (13, 1519040), (16, 1234220), (20, 987376), (26, 759520), (32, 617110), (40, 493688), (47, 420160), (52, 379760), (64, 308555), (65, 303808), (80, 246844), (94, 210080), (101, 195520), (104, 189880), (130, 151904), (160, 123422), (188, 105040), (202, 97760), (208, 94940), (235, 84032), (260, 75952), (320, 61711), (376, 52520), (404, 48880), (416, 47470), (470, 42016), (505, 39104), (520, 37976), (611, 32320), (752, 26260), (808, 24440), (832, 23735), (940, 21008), (1010, 19552), (1040, 18988), (1222, 16160), (1313, 15040), (1504, 13130), (1616, 12220), (1880, 10504), (2020, 9776), (2080, 9494), (2444, 8080), (2626, 7520), (3008, 6565), (3055, 6464), (3232, 6110), (3760, 5252), (4040, 4888), (4160, 4747)]