28002920

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{2053}}^1$

素因数の和:2106

約数の個数: 64

約数和(自身を含む): 70986240

約数和(自身を除く): 42983320

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 31, 40, 44, 55, 62, 88, 110, 124, 155, 220, 248, 310, 341, 440, 620, 682, 1240, 1364, 1705, 2053, 2728, 3410, 4106, 6820, 8212, 10265, 13640, 16424, 20530, 22583, 41060, 45166, 63643, 82120, 90332, 112915, 127286, 180664, 225830, 254572, 318215, 451660, 509144, 636430, 700073, 903320, 1272860, 1400146, 2545720, 2800292, 3500365, 5600584, 7000730, 14001460, 28002920]

約数ペア:

[(1, 28002920), (2, 14001460), (4, 7000730), (5, 5600584), (8, 3500365), (10, 2800292), (11, 2545720), (20, 1400146), (22, 1272860), (31, 903320), (40, 700073), (44, 636430), (55, 509144), (62, 451660), (88, 318215), (110, 254572), (124, 225830), (155, 180664), (220, 127286), (248, 112915), (310, 90332), (341, 82120), (440, 63643), (620, 45166), (682, 41060), (1240, 22583), (1364, 20530), (1705, 16424), (2053, 13640), (2728, 10265), (3410, 8212), (4106, 6820)]