20618312

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{269}}^1$

素因数の和:366

約数の個数: 64

約数和(自身を含む): 46267200

約数和(自身を除く): 25648888

約数列:

[1, 2, 4, 8, 11, 13, 22, 26, 44, 52, 67, 88, 104, 134, 143, 268, 269, 286, 536, 538, 572, 737, 871, 1076, 1144, 1474, 1742, 2152, 2948, 2959, 3484, 3497, 5896, 5918, 6968, 6994, 9581, 11836, 13988, 18023, 19162, 23672, 27976, 36046, 38324, 38467, 72092, 76648, 76934, 144184, 153868, 198253, 234299, 307736, 396506, 468598, 793012, 937196, 1586024, 1874392, 2577289, 5154578, 10309156, 20618312]

約数ペア:

[(1, 20618312), (2, 10309156), (4, 5154578), (8, 2577289), (11, 1874392), (13, 1586024), (22, 937196), (26, 793012), (44, 468598), (52, 396506), (67, 307736), (88, 234299), (104, 198253), (134, 153868), (143, 144184), (268, 76934), (269, 76648), (286, 72092), (536, 38467), (538, 38324), (572, 36046), (737, 27976), (871, 23672), (1076, 19162), (1144, 18023), (1474, 13988), (1742, 11836), (2152, 9581), (2948, 6994), (2959, 6968), (3484, 5918), (3497, 5896)]