20161993720

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{619}}^1\times {\mathrm{74027}}^1$

素因数の和:74668

約数の個数: 64

約数和(自身を含む): 49569148800

約数和(自身を除く): 29407155080

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 619, 1238, 2476, 3095, 4952, 6190, 6809, 12380, 13618, 24760, 27236, 34045, 54472, 68090, 74027, 136180, 148054, 272360, 296108, 370135, 592216, 740270, 814297, 1480540, 1628594, 2961080, 3257188, 4071485, 6514376, 8142970, 16285940, 32571880, 45822713, 91645426, 183290852, 229113565, 366581704, 458227130, 504049843, 916454260, 1008099686, 1832908520, 2016199372, 2520249215, 4032398744, 5040498430, 10080996860, 20161993720]

約数ペア:

[(1, 20161993720), (2, 10080996860), (4, 5040498430), (5, 4032398744), (8, 2520249215), (10, 2016199372), (11, 1832908520), (20, 1008099686), (22, 916454260), (40, 504049843), (44, 458227130), (55, 366581704), (88, 229113565), (110, 183290852), (220, 91645426), (440, 45822713), (619, 32571880), (1238, 16285940), (2476, 8142970), (3095, 6514376), (4952, 4071485), (6190, 3257188), (6809, 2961080), (12380, 1628594), (13618, 1480540), (24760, 814297), (27236, 740270), (34045, 592216), (54472, 370135), (68090, 296108), (74027, 272360), (136180, 148054)]