81139980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{79549}}^1$

素因数の和:79578

約数の個数: 48

約数和(自身を含む): 240559200

約数和(自身を除く): 159419220

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 17, 20, 30, 34, 51, 60, 68, 85, 102, 170, 204, 255, 340, 510, 1020, 79549, 159098, 238647, 318196, 397745, 477294, 795490, 954588, 1193235, 1352333, 1590980, 2386470, 2704666, 4056999, 4772940, 5409332, 6761665, 8113998, 13523330, 16227996, 20284995, 27046660, 40569990, 81139980]

約数ペア:

[(1, 81139980), (2, 40569990), (3, 27046660), (4, 20284995), (5, 16227996), (6, 13523330), (10, 8113998), (12, 6761665), (15, 5409332), (17, 4772940), (20, 4056999), (30, 2704666), (34, 2386470), (51, 1590980), (60, 1352333), (68, 1193235), (85, 954588), (102, 795490), (170, 477294), (204, 397745), (255, 318196), (340, 238647), (510, 159098), (1020, 79549)]