189989080

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{101}}^1$

素因数の和:221

約数の個数: 128

約数和(自身を含む): 468840960

約数和(自身を除く): 278851880

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 37, 40, 41, 62, 74, 82, 101, 124, 148, 155, 164, 185, 202, 205, 248, 296, 310, 328, 370, 404, 410, 505, 620, 740, 808, 820, 1010, 1147, 1240, 1271, 1480, 1517, 1640, 2020, 2294, 2542, 3034, 3131, 3737, 4040, 4141, 4588, 5084, 5735, 6068, 6262, 6355, 7474, 7585, 8282, 9176, 10168, 11470, 12136, 12524, 12710, 14948, 15170, 15655, 16564, 18685, 20705, 22940, 25048, 25420, 29896, 30340, 31310, 33128, 37370, 41410, 45880, 47027, 50840, 60680, 62620, 74740, 82820, 94054, 115847, 125240, 128371, 149480, 153217, 165640, 188108, 231694, 235135, 256742, 306434, 376216, 463388, 470270, 513484, 579235, 612868, 641855, 766085, 926776, 940540, 1026968, 1158470, 1225736, 1283710, 1532170, 1881080, 2316940, 2567420, 3064340, 4633880, 4749727, 5134840, 6128680, 9499454, 18998908, 23748635, 37997816, 47497270, 94994540, 189989080]

約数ペア:

[(1, 189989080), (2, 94994540), (4, 47497270), (5, 37997816), (8, 23748635), (10, 18998908), (20, 9499454), (31, 6128680), (37, 5134840), (40, 4749727), (41, 4633880), (62, 3064340), (74, 2567420), (82, 2316940), (101, 1881080), (124, 1532170), (148, 1283710), (155, 1225736), (164, 1158470), (185, 1026968), (202, 940540), (205, 926776), (248, 766085), (296, 641855), (310, 612868), (328, 579235), (370, 513484), (404, 470270), (410, 463388), (505, 376216), (620, 306434), (740, 256742), (808, 235135), (820, 231694), (1010, 188108), (1147, 165640), (1240, 153217), (1271, 149480), (1480, 128371), (1517, 125240), (1640, 115847), (2020, 94054), (2294, 82820), (2542, 74740), (3034, 62620), (3131, 60680), (3737, 50840), (4040, 47027), (4141, 45880), (4588, 41410), (5084, 37370), (5735, 33128), (6068, 31310), (6262, 30340), (6355, 29896), (7474, 25420), (7585, 25048), (8282, 22940), (9176, 20705), (10168, 18685), (11470, 16564), (12136, 15655), (12524, 15170), (12710, 14948)]