20618915940

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{16364219}}^1$

素因数の和:16364241

約数の個数: 72

約数和(自身を含む): 71478912960

約数和(自身を除く): 50859997020

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 16364219, 32728438, 49092657, 65456876, 81821095, 98185314, 114549533, 147277971, 163642190, 196370628, 229099066, 245463285, 294555942, 327284380, 343648599, 458198132, 490926570, 572747665, 589111884, 687297198, 736389855, 981853140, 1030945797, 1145495330, 1374594396, 1472779710, 1718242995, 2061891594, 2290990660, 2945559420, 3436485990, 4123783188, 5154728985, 6872971980, 10309457970, 20618915940]

約数ペア:

[(1, 20618915940), (2, 10309457970), (3, 6872971980), (4, 5154728985), (5, 4123783188), (6, 3436485990), (7, 2945559420), (9, 2290990660), (10, 2061891594), (12, 1718242995), (14, 1472779710), (15, 1374594396), (18, 1145495330), (20, 1030945797), (21, 981853140), (28, 736389855), (30, 687297198), (35, 589111884), (36, 572747665), (42, 490926570), (45, 458198132), (60, 343648599), (63, 327284380), (70, 294555942), (84, 245463285), (90, 229099066), (105, 196370628), (126, 163642190), (140, 147277971), (180, 114549533), (210, 98185314), (252, 81821095), (315, 65456876), (420, 49092657), (630, 32728438), (1260, 16364219)]