72224080

素因数分解:

$2^4\times 5^1\times {\mathrm{911}}^1\times {\mathrm{991}}^1$

素因数の和:1915

約数の個数: 40

約数和(自身を含む): 168274944

約数和(自身を除く): 96050864

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 911, 991, 1822, 1982, 3644, 3964, 4555, 4955, 7288, 7928, 9110, 9910, 14576, 15856, 18220, 19820, 36440, 39640, 72880, 79280, 902801, 1805602, 3611204, 4514005, 7222408, 9028010, 14444816, 18056020, 36112040, 72224080]

約数ペア:

[(1, 72224080), (2, 36112040), (4, 18056020), (5, 14444816), (8, 9028010), (10, 7222408), (16, 4514005), (20, 3611204), (40, 1805602), (80, 902801), (911, 79280), (991, 72880), (1822, 39640), (1982, 36440), (3644, 19820), (3964, 18220), (4555, 15856), (4955, 14576), (7288, 9910), (7928, 9110)]