19912736

素因数分解:

$2^5\times {\mathrm{53}}^1\times {\mathrm{59}}^1\times {\mathrm{199}}^1$

素因数の和:321

約数の個数: 48

約数和(自身を含む): 40824000

約数和(自身を除く): 20911264

約数列:

[1, 2, 4, 8, 16, 32, 53, 59, 106, 118, 199, 212, 236, 398, 424, 472, 796, 848, 944, 1592, 1696, 1888, 3127, 3184, 6254, 6368, 10547, 11741, 12508, 21094, 23482, 25016, 42188, 46964, 50032, 84376, 93928, 100064, 168752, 187856, 337504, 375712, 622273, 1244546, 2489092, 4978184, 9956368, 19912736]

約数ペア:

[(1, 19912736), (2, 9956368), (4, 4978184), (8, 2489092), (16, 1244546), (32, 622273), (53, 375712), (59, 337504), (106, 187856), (118, 168752), (199, 100064), (212, 93928), (236, 84376), (398, 50032), (424, 46964), (472, 42188), (796, 25016), (848, 23482), (944, 21094), (1592, 12508), (1696, 11741), (1888, 10547), (3127, 6368), (3184, 6254)]