178679980

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{167}}^1\times {\mathrm{877}}^1$

素因数の和:1114

約数の個数: 48

約数和(自身を含む): 384100416

約数和(自身を除く): 205420436

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 167, 244, 305, 334, 610, 668, 835, 877, 1220, 1670, 1754, 3340, 3508, 4385, 8770, 10187, 17540, 20374, 40748, 50935, 53497, 101870, 106994, 146459, 203740, 213988, 267485, 292918, 534970, 585836, 732295, 1069940, 1464590, 2929180, 8933999, 17867998, 35735996, 44669995, 89339990, 178679980]

約数ペア:

[(1, 178679980), (2, 89339990), (4, 44669995), (5, 35735996), (10, 17867998), (20, 8933999), (61, 2929180), (122, 1464590), (167, 1069940), (244, 732295), (305, 585836), (334, 534970), (610, 292918), (668, 267485), (835, 213988), (877, 203740), (1220, 146459), (1670, 106994), (1754, 101870), (3340, 53497), (3508, 50935), (4385, 40748), (8770, 20374), (10187, 17540)]