21190312

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{18523}}^1$

素因数の和:18553

約数の個数: 32

約数和(自身を含む): 46680480

約数和(自身を除く): 25490168

約数列:

[1, 2, 4, 8, 11, 13, 22, 26, 44, 52, 88, 104, 143, 286, 572, 1144, 18523, 37046, 74092, 148184, 203753, 240799, 407506, 481598, 815012, 963196, 1630024, 1926392, 2648789, 5297578, 10595156, 21190312]

約数ペア:

[(1, 21190312), (2, 10595156), (4, 5297578), (8, 2648789), (11, 1926392), (13, 1630024), (22, 963196), (26, 815012), (44, 481598), (52, 407506), (88, 240799), (104, 203753), (143, 148184), (286, 74092), (572, 37046), (1144, 18523)]