19982596280

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{479}}^1\times {\mathrm{1979}}^1$

素因数の和:2517

約数の個数: 128

約数和(自身を含む): 49268736000

約数和(自身を除く): 29286139720

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 31, 34, 40, 62, 68, 85, 124, 136, 155, 170, 248, 310, 340, 479, 527, 620, 680, 958, 1054, 1240, 1916, 1979, 2108, 2395, 2635, 3832, 3958, 4216, 4790, 5270, 7916, 8143, 9580, 9895, 10540, 14849, 15832, 16286, 19160, 19790, 21080, 29698, 32572, 33643, 39580, 40715, 59396, 61349, 65144, 67286, 74245, 79160, 81430, 118792, 122698, 134572, 148490, 162860, 168215, 245396, 252433, 269144, 296980, 306745, 325720, 336430, 490792, 504866, 593960, 613490, 672860, 947941, 1009732, 1042933, 1226980, 1262165, 1345720, 1895882, 2019464, 2085866, 2453960, 2524330, 3791764, 4171732, 4739705, 5048660, 5214665, 7583528, 8343464, 9479410, 10097320, 10429330, 16114997, 18958820, 20858660, 29386171, 32229994, 37917640, 41717320, 58772342, 64459988, 80574985, 117544684, 128919976, 146930855, 161149970, 235089368, 293861710, 322299940, 499564907, 587723420, 644599880, 999129814, 1175446840, 1998259628, 2497824535, 3996519256, 4995649070, 9991298140, 19982596280]

約数ペア:

[(1, 19982596280), (2, 9991298140), (4, 4995649070), (5, 3996519256), (8, 2497824535), (10, 1998259628), (17, 1175446840), (20, 999129814), (31, 644599880), (34, 587723420), (40, 499564907), (62, 322299940), (68, 293861710), (85, 235089368), (124, 161149970), (136, 146930855), (155, 128919976), (170, 117544684), (248, 80574985), (310, 64459988), (340, 58772342), (479, 41717320), (527, 37917640), (620, 32229994), (680, 29386171), (958, 20858660), (1054, 18958820), (1240, 16114997), (1916, 10429330), (1979, 10097320), (2108, 9479410), (2395, 8343464), (2635, 7583528), (3832, 5214665), (3958, 5048660), (4216, 4739705), (4790, 4171732), (5270, 3791764), (7916, 2524330), (8143, 2453960), (9580, 2085866), (9895, 2019464), (10540, 1895882), (14849, 1345720), (15832, 1262165), (16286, 1226980), (19160, 1042933), (19790, 1009732), (21080, 947941), (29698, 672860), (32572, 613490), (33643, 593960), (39580, 504866), (40715, 490792), (59396, 336430), (61349, 325720), (65144, 306745), (67286, 296980), (74245, 269144), (79160, 252433), (81430, 245396), (118792, 168215), (122698, 162860), (134572, 148490)]