39919880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{997}}^1$

素因数の和:1039

約数の個数: 128

約数和(自身を含む): 120718080

約数和(自身を除く): 80798200

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 13, 14, 20, 22, 26, 28, 35, 40, 44, 52, 55, 56, 65, 70, 77, 88, 91, 104, 110, 130, 140, 143, 154, 182, 220, 260, 280, 286, 308, 364, 385, 440, 455, 520, 572, 616, 715, 728, 770, 910, 997, 1001, 1144, 1430, 1540, 1820, 1994, 2002, 2860, 3080, 3640, 3988, 4004, 4985, 5005, 5720, 6979, 7976, 8008, 9970, 10010, 10967, 12961, 13958, 19940, 20020, 21934, 25922, 27916, 34895, 39880, 40040, 43868, 51844, 54835, 55832, 64805, 69790, 76769, 87736, 90727, 103688, 109670, 129610, 139580, 142571, 153538, 181454, 219340, 259220, 279160, 285142, 307076, 362908, 383845, 438680, 453635, 518440, 570284, 614152, 712855, 725816, 767690, 907270, 997997, 1140568, 1425710, 1535380, 1814540, 1995994, 2851420, 3070760, 3629080, 3991988, 4989985, 5702840, 7983976, 9979970, 19959940, 39919880]

約数ペア:

[(1, 39919880), (2, 19959940), (4, 9979970), (5, 7983976), (7, 5702840), (8, 4989985), (10, 3991988), (11, 3629080), (13, 3070760), (14, 2851420), (20, 1995994), (22, 1814540), (26, 1535380), (28, 1425710), (35, 1140568), (40, 997997), (44, 907270), (52, 767690), (55, 725816), (56, 712855), (65, 614152), (70, 570284), (77, 518440), (88, 453635), (91, 438680), (104, 383845), (110, 362908), (130, 307076), (140, 285142), (143, 279160), (154, 259220), (182, 219340), (220, 181454), (260, 153538), (280, 142571), (286, 139580), (308, 129610), (364, 109670), (385, 103688), (440, 90727), (455, 87736), (520, 76769), (572, 69790), (616, 64805), (715, 55832), (728, 54835), (770, 51844), (910, 43868), (997, 40040), (1001, 39880), (1144, 34895), (1430, 27916), (1540, 25922), (1820, 21934), (1994, 20020), (2002, 19940), (2860, 13958), (3080, 12961), (3640, 10967), (3988, 10010), (4004, 9970), (4985, 8008), (5005, 7976), (5720, 6979)]