816901960

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{3571}}^1$

素因数の和:3651

約数の個数: 128

約数和(自身を含む): 2263219200

約数和(自身を除く): 1446317240

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 19, 20, 28, 35, 38, 40, 43, 56, 70, 76, 86, 95, 133, 140, 152, 172, 190, 215, 266, 280, 301, 344, 380, 430, 532, 602, 665, 760, 817, 860, 1064, 1204, 1330, 1505, 1634, 1720, 2408, 2660, 3010, 3268, 3571, 4085, 5320, 5719, 6020, 6536, 7142, 8170, 11438, 12040, 14284, 16340, 17855, 22876, 24997, 28568, 28595, 32680, 35710, 45752, 49994, 57190, 67849, 71420, 99988, 114380, 124985, 135698, 142840, 153553, 199976, 228760, 249970, 271396, 307106, 339245, 474943, 499940, 542792, 614212, 678490, 767765, 949886, 999880, 1074871, 1228424, 1356980, 1535530, 1899772, 2149742, 2374715, 2713960, 2917507, 3071060, 3799544, 4299484, 4749430, 5374355, 5835014, 6142120, 8598968, 9498860, 10748710, 11670028, 14587535, 18997720, 20422549, 21497420, 23340056, 29175070, 40845098, 42994840, 58350140, 81690196, 102112745, 116700280, 163380392, 204225490, 408450980, 816901960]

約数ペア:

[(1, 816901960), (2, 408450980), (4, 204225490), (5, 163380392), (7, 116700280), (8, 102112745), (10, 81690196), (14, 58350140), (19, 42994840), (20, 40845098), (28, 29175070), (35, 23340056), (38, 21497420), (40, 20422549), (43, 18997720), (56, 14587535), (70, 11670028), (76, 10748710), (86, 9498860), (95, 8598968), (133, 6142120), (140, 5835014), (152, 5374355), (172, 4749430), (190, 4299484), (215, 3799544), (266, 3071060), (280, 2917507), (301, 2713960), (344, 2374715), (380, 2149742), (430, 1899772), (532, 1535530), (602, 1356980), (665, 1228424), (760, 1074871), (817, 999880), (860, 949886), (1064, 767765), (1204, 678490), (1330, 614212), (1505, 542792), (1634, 499940), (1720, 474943), (2408, 339245), (2660, 307106), (3010, 271396), (3268, 249970), (3571, 228760), (4085, 199976), (5320, 153553), (5719, 142840), (6020, 135698), (6536, 124985), (7142, 114380), (8170, 99988), (11438, 71420), (12040, 67849), (14284, 57190), (16340, 49994), (17855, 45752), (22876, 35710), (24997, 32680), (28568, 28595)]