28019790

素因数分解:

$2^1\times 3^3\times 5^1\times {\mathrm{157}}^1\times {\mathrm{661}}^1$

素因数の和:834

約数の個数: 64

約数和(自身を含む): 75309120

約数和(自身を除く): 47289330

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 90, 135, 157, 270, 314, 471, 661, 785, 942, 1322, 1413, 1570, 1983, 2355, 2826, 3305, 3966, 4239, 4710, 5949, 6610, 7065, 8478, 9915, 11898, 14130, 17847, 19830, 21195, 29745, 35694, 42390, 59490, 89235, 103777, 178470, 207554, 311331, 518885, 622662, 933993, 1037770, 1556655, 1867986, 2801979, 3113310, 4669965, 5603958, 9339930, 14009895, 28019790]

約数ペア:

[(1, 28019790), (2, 14009895), (3, 9339930), (5, 5603958), (6, 4669965), (9, 3113310), (10, 2801979), (15, 1867986), (18, 1556655), (27, 1037770), (30, 933993), (45, 622662), (54, 518885), (90, 311331), (135, 207554), (157, 178470), (270, 103777), (314, 89235), (471, 59490), (661, 42390), (785, 35694), (942, 29745), (1322, 21195), (1413, 19830), (1570, 17847), (1983, 14130), (2355, 11898), (2826, 9915), (3305, 8478), (3966, 7065), (4239, 6610), (4710, 5949)]