21205770

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{421}}^1$

素因数の和:527

約数の個数: 64

約数和(自身を含む): 53961984

約数和(自身を除く): 32756214

約数列:

[1, 2, 3, 5, 6, 10, 15, 23, 30, 46, 69, 73, 115, 138, 146, 219, 230, 345, 365, 421, 438, 690, 730, 842, 1095, 1263, 1679, 2105, 2190, 2526, 3358, 4210, 5037, 6315, 8395, 9683, 10074, 12630, 16790, 19366, 25185, 29049, 30733, 48415, 50370, 58098, 61466, 92199, 96830, 145245, 153665, 184398, 290490, 307330, 460995, 706859, 921990, 1413718, 2120577, 3534295, 4241154, 7068590, 10602885, 21205770]

約数ペア:

[(1, 21205770), (2, 10602885), (3, 7068590), (5, 4241154), (6, 3534295), (10, 2120577), (15, 1413718), (23, 921990), (30, 706859), (46, 460995), (69, 307330), (73, 290490), (115, 184398), (138, 153665), (146, 145245), (219, 96830), (230, 92199), (345, 61466), (365, 58098), (421, 50370), (438, 48415), (690, 30733), (730, 29049), (842, 25185), (1095, 19366), (1263, 16790), (1679, 12630), (2105, 10074), (2190, 9683), (2526, 8395), (3358, 6315), (4210, 5037)]