991777960

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{2647}}^1$

素因数の和:2723

約数の個数: 128

約数和(自身を含む): 2573856000

約数和(自身を除く): 1582078040

約数列:

[1, 2, 4, 5, 8, 10, 17, 19, 20, 29, 34, 38, 40, 58, 68, 76, 85, 95, 116, 136, 145, 152, 170, 190, 232, 290, 323, 340, 380, 493, 551, 580, 646, 680, 760, 986, 1102, 1160, 1292, 1615, 1972, 2204, 2465, 2584, 2647, 2755, 3230, 3944, 4408, 4930, 5294, 5510, 6460, 9367, 9860, 10588, 11020, 12920, 13235, 18734, 19720, 21176, 22040, 26470, 37468, 44999, 46835, 50293, 52940, 74936, 76763, 89998, 93670, 100586, 105880, 153526, 179996, 187340, 201172, 224995, 251465, 307052, 359992, 374680, 383815, 402344, 449990, 502930, 614104, 767630, 854981, 899980, 1005860, 1304971, 1458497, 1535260, 1709962, 1799960, 2011720, 2609942, 2916994, 3070520, 3419924, 4274905, 5219884, 5833988, 6524855, 6839848, 7292485, 8549810, 10439768, 11667976, 13049710, 14584970, 17099620, 24794449, 26099420, 29169940, 34199240, 49588898, 52198840, 58339880, 99177796, 123972245, 198355592, 247944490, 495888980, 991777960]

約数ペア:

[(1, 991777960), (2, 495888980), (4, 247944490), (5, 198355592), (8, 123972245), (10, 99177796), (17, 58339880), (19, 52198840), (20, 49588898), (29, 34199240), (34, 29169940), (38, 26099420), (40, 24794449), (58, 17099620), (68, 14584970), (76, 13049710), (85, 11667976), (95, 10439768), (116, 8549810), (136, 7292485), (145, 6839848), (152, 6524855), (170, 5833988), (190, 5219884), (232, 4274905), (290, 3419924), (323, 3070520), (340, 2916994), (380, 2609942), (493, 2011720), (551, 1799960), (580, 1709962), (646, 1535260), (680, 1458497), (760, 1304971), (986, 1005860), (1102, 899980), (1160, 854981), (1292, 767630), (1615, 614104), (1972, 502930), (2204, 449990), (2465, 402344), (2584, 383815), (2647, 374680), (2755, 359992), (3230, 307052), (3944, 251465), (4408, 224995), (4930, 201172), (5294, 187340), (5510, 179996), (6460, 153526), (9367, 105880), (9860, 100586), (10588, 93670), (11020, 89998), (12920, 76763), (13235, 74936), (18734, 52940), (19720, 50293), (21176, 46835), (22040, 44999), (26470, 37468)]