2647991640

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{991}}^1\times {\mathrm{3181}}^1$

素因数の和:4193

約数の個数: 128

約数和(自身を含む): 9090846720

約数和(自身を除く): 6442855080

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840, 991, 1982, 2973, 3181, 3964, 4955, 5946, 6362, 6937, 7928, 9543, 9910, 11892, 12724, 13874, 14865, 15905, 19086, 19820, 20811, 22267, 23784, 25448, 27748, 29730, 31810, 34685, 38172, 39640, 41622, 44534, 47715, 55496, 59460, 63620, 66801, 69370, 76344, 83244, 89068, 95430, 104055, 111335, 118920, 127240, 133602, 138740, 166488, 178136, 190860, 208110, 222670, 267204, 277480, 334005, 381720, 416220, 445340, 534408, 668010, 832440, 890680, 1336020, 2672040, 3152371, 6304742, 9457113, 12609484, 15761855, 18914226, 22066597, 25218968, 31523710, 37828452, 44133194, 47285565, 63047420, 66199791, 75656904, 88266388, 94571130, 110332985, 126094840, 132399582, 176532776, 189142260, 220665970, 264799164, 330998955, 378284520, 441331940, 529598328, 661997910, 882663880, 1323995820, 2647991640]

約数ペア:

[(1, 2647991640), (2, 1323995820), (3, 882663880), (4, 661997910), (5, 529598328), (6, 441331940), (7, 378284520), (8, 330998955), (10, 264799164), (12, 220665970), (14, 189142260), (15, 176532776), (20, 132399582), (21, 126094840), (24, 110332985), (28, 94571130), (30, 88266388), (35, 75656904), (40, 66199791), (42, 63047420), (56, 47285565), (60, 44133194), (70, 37828452), (84, 31523710), (105, 25218968), (120, 22066597), (140, 18914226), (168, 15761855), (210, 12609484), (280, 9457113), (420, 6304742), (840, 3152371), (991, 2672040), (1982, 1336020), (2973, 890680), (3181, 832440), (3964, 668010), (4955, 534408), (5946, 445340), (6362, 416220), (6937, 381720), (7928, 334005), (9543, 277480), (9910, 267204), (11892, 222670), (12724, 208110), (13874, 190860), (14865, 178136), (15905, 166488), (19086, 138740), (19820, 133602), (20811, 127240), (22267, 118920), (23784, 111335), (25448, 104055), (27748, 95430), (29730, 89068), (31810, 83244), (34685, 76344), (38172, 69370), (39640, 66801), (41622, 63620), (44534, 59460), (47715, 55496)]