420999180

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{143197}}^1$

素因数の和:143223

約数の個数: 72

約数和(自身を含む): 1371264048

約数和(自身を除く): 950264868

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 98, 105, 140, 147, 196, 210, 245, 294, 420, 490, 588, 735, 980, 1470, 2940, 143197, 286394, 429591, 572788, 715985, 859182, 1002379, 1431970, 1718364, 2004758, 2147955, 2863940, 3007137, 4009516, 4295910, 5011895, 6014274, 7016653, 8591820, 10023790, 12028548, 14033306, 15035685, 20047580, 21049959, 28066612, 30071370, 35083265, 42099918, 60142740, 70166530, 84199836, 105249795, 140333060, 210499590, 420999180]

約数ペア:

[(1, 420999180), (2, 210499590), (3, 140333060), (4, 105249795), (5, 84199836), (6, 70166530), (7, 60142740), (10, 42099918), (12, 35083265), (14, 30071370), (15, 28066612), (20, 21049959), (21, 20047580), (28, 15035685), (30, 14033306), (35, 12028548), (42, 10023790), (49, 8591820), (60, 7016653), (70, 6014274), (84, 5011895), (98, 4295910), (105, 4009516), (140, 3007137), (147, 2863940), (196, 2147955), (210, 2004758), (245, 1718364), (294, 1431970), (420, 1002379), (490, 859182), (588, 715985), (735, 572788), (980, 429591), (1470, 286394), (2940, 143197)]