20583920

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{59}}^1\times {\mathrm{89}}^1$

素因数の和:175

約数の個数: 120

約数和(自身を含む): 57250800

約数和(自身を除く): 36666880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 59, 70, 80, 89, 98, 112, 118, 140, 178, 196, 236, 245, 280, 295, 356, 392, 413, 445, 472, 490, 560, 590, 623, 712, 784, 826, 890, 944, 980, 1180, 1246, 1424, 1652, 1780, 1960, 2065, 2360, 2492, 2891, 3115, 3304, 3560, 3920, 4130, 4361, 4720, 4984, 5251, 5782, 6230, 6608, 7120, 8260, 8722, 9968, 10502, 11564, 12460, 14455, 16520, 17444, 21004, 21805, 23128, 24920, 26255, 28910, 33040, 34888, 36757, 42008, 43610, 46256, 49840, 52510, 57820, 69776, 73514, 84016, 87220, 105020, 115640, 147028, 174440, 183785, 210040, 231280, 257299, 294056, 348880, 367570, 420080, 514598, 588112, 735140, 1029196, 1286495, 1470280, 2058392, 2572990, 2940560, 4116784, 5145980, 10291960, 20583920]

約数ペア:

[(1, 20583920), (2, 10291960), (4, 5145980), (5, 4116784), (7, 2940560), (8, 2572990), (10, 2058392), (14, 1470280), (16, 1286495), (20, 1029196), (28, 735140), (35, 588112), (40, 514598), (49, 420080), (56, 367570), (59, 348880), (70, 294056), (80, 257299), (89, 231280), (98, 210040), (112, 183785), (118, 174440), (140, 147028), (178, 115640), (196, 105020), (236, 87220), (245, 84016), (280, 73514), (295, 69776), (356, 57820), (392, 52510), (413, 49840), (445, 46256), (472, 43610), (490, 42008), (560, 36757), (590, 34888), (623, 33040), (712, 28910), (784, 26255), (826, 24920), (890, 23128), (944, 21805), (980, 21004), (1180, 17444), (1246, 16520), (1424, 14455), (1652, 12460), (1780, 11564), (1960, 10502), (2065, 9968), (2360, 8722), (2492, 8260), (2891, 7120), (3115, 6608), (3304, 6230), (3560, 5782), (3920, 5251), (4130, 4984), (4361, 4720)]