408875460

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{487}}^1\times {\mathrm{1999}}^1$

素因数の和:2505

約数の個数: 96

約数和(自身を含む): 1311744000

約数和(自身を除く): 902868540

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 487, 974, 1461, 1948, 1999, 2435, 2922, 3409, 3998, 4870, 5844, 5997, 6818, 7305, 7996, 9740, 9995, 10227, 11994, 13636, 13993, 14610, 17045, 19990, 20454, 23988, 27986, 29220, 29985, 34090, 39980, 40908, 41979, 51135, 55972, 59970, 68180, 69965, 83958, 102270, 119940, 139930, 167916, 204540, 209895, 279860, 419790, 839580, 973513, 1947026, 2920539, 3894052, 4867565, 5841078, 6814591, 9735130, 11682156, 13629182, 14602695, 19470260, 20443773, 27258364, 29205390, 34072955, 40887546, 58410780, 68145910, 81775092, 102218865, 136291820, 204437730, 408875460]

約数ペア:

[(1, 408875460), (2, 204437730), (3, 136291820), (4, 102218865), (5, 81775092), (6, 68145910), (7, 58410780), (10, 40887546), (12, 34072955), (14, 29205390), (15, 27258364), (20, 20443773), (21, 19470260), (28, 14602695), (30, 13629182), (35, 11682156), (42, 9735130), (60, 6814591), (70, 5841078), (84, 4867565), (105, 3894052), (140, 2920539), (210, 1947026), (420, 973513), (487, 839580), (974, 419790), (1461, 279860), (1948, 209895), (1999, 204540), (2435, 167916), (2922, 139930), (3409, 119940), (3998, 102270), (4870, 83958), (5844, 69965), (5997, 68180), (6818, 59970), (7305, 55972), (7996, 51135), (9740, 41979), (9995, 40908), (10227, 39980), (11994, 34090), (13636, 29985), (13993, 29220), (14610, 27986), (17045, 23988), (19990, 20454)]