406978740

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{322999}}^1$

素因数の和:323021

約数の個数: 72

約数和(自身を含む): 1410864000

約数和(自身を除く): 1003885260

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 322999, 645998, 968997, 1291996, 1614995, 1937994, 2260993, 2906991, 3229990, 3875988, 4521986, 4844985, 5813982, 6459980, 6782979, 9043972, 9689970, 11304965, 11627964, 13565958, 14534955, 19379940, 20348937, 22609930, 27131916, 29069910, 33914895, 40697874, 45219860, 58139820, 67829790, 81395748, 101744685, 135659580, 203489370, 406978740]

約数ペア:

[(1, 406978740), (2, 203489370), (3, 135659580), (4, 101744685), (5, 81395748), (6, 67829790), (7, 58139820), (9, 45219860), (10, 40697874), (12, 33914895), (14, 29069910), (15, 27131916), (18, 22609930), (20, 20348937), (21, 19379940), (28, 14534955), (30, 13565958), (35, 11627964), (36, 11304965), (42, 9689970), (45, 9043972), (60, 6782979), (63, 6459980), (70, 5813982), (84, 4844985), (90, 4521986), (105, 3875988), (126, 3229990), (140, 2906991), (180, 2260993), (210, 1937994), (252, 1614995), (315, 1291996), (420, 968997), (630, 645998), (1260, 322999)]