21942920

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^2\times {\mathrm{61}}^1$

素因数の和:135

約数の個数: 96

約数和(自身を含む): 55543320

約数和(自身を除く): 33600400

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 23, 34, 40, 46, 61, 68, 85, 92, 115, 122, 136, 170, 184, 230, 244, 305, 340, 391, 460, 488, 529, 610, 680, 782, 920, 1037, 1058, 1220, 1403, 1564, 1955, 2074, 2116, 2440, 2645, 2806, 3128, 3910, 4148, 4232, 5185, 5290, 5612, 7015, 7820, 8296, 8993, 10370, 10580, 11224, 14030, 15640, 17986, 20740, 21160, 23851, 28060, 32269, 35972, 41480, 44965, 47702, 56120, 64538, 71944, 89930, 95404, 119255, 129076, 161345, 179860, 190808, 238510, 258152, 322690, 359720, 477020, 548573, 645380, 954040, 1097146, 1290760, 2194292, 2742865, 4388584, 5485730, 10971460, 21942920]

約数ペア:

[(1, 21942920), (2, 10971460), (4, 5485730), (5, 4388584), (8, 2742865), (10, 2194292), (17, 1290760), (20, 1097146), (23, 954040), (34, 645380), (40, 548573), (46, 477020), (61, 359720), (68, 322690), (85, 258152), (92, 238510), (115, 190808), (122, 179860), (136, 161345), (170, 129076), (184, 119255), (230, 95404), (244, 89930), (305, 71944), (340, 64538), (391, 56120), (460, 47702), (488, 44965), (529, 41480), (610, 35972), (680, 32269), (782, 28060), (920, 23851), (1037, 21160), (1058, 20740), (1220, 17986), (1403, 15640), (1564, 14030), (1955, 11224), (2074, 10580), (2116, 10370), (2440, 8993), (2645, 8296), (2806, 7820), (3128, 7015), (3910, 5612), (4148, 5290), (4232, 5185)]