21177540

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{4057}}^1$

素因数の和:4101

約数の個数: 72

約数和(自身を含む): 66470040

約数和(自身を除く): 45292500

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 29, 30, 36, 45, 58, 60, 87, 90, 116, 145, 174, 180, 261, 290, 348, 435, 522, 580, 870, 1044, 1305, 1740, 2610, 4057, 5220, 8114, 12171, 16228, 20285, 24342, 36513, 40570, 48684, 60855, 73026, 81140, 117653, 121710, 146052, 182565, 235306, 243420, 352959, 365130, 470612, 588265, 705918, 730260, 1058877, 1176530, 1411836, 1764795, 2117754, 2353060, 3529590, 4235508, 5294385, 7059180, 10588770, 21177540]

約数ペア:

[(1, 21177540), (2, 10588770), (3, 7059180), (4, 5294385), (5, 4235508), (6, 3529590), (9, 2353060), (10, 2117754), (12, 1764795), (15, 1411836), (18, 1176530), (20, 1058877), (29, 730260), (30, 705918), (36, 588265), (45, 470612), (58, 365130), (60, 352959), (87, 243420), (90, 235306), (116, 182565), (145, 146052), (174, 121710), (180, 117653), (261, 81140), (290, 73026), (348, 60855), (435, 48684), (522, 40570), (580, 36513), (870, 24342), (1044, 20285), (1305, 16228), (1740, 12171), (2610, 8114), (4057, 5220)]