51264980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{73}}^2$

素因数の和:205

約数の個数: 72

約数和(自身を含む): 120724632

約数和(自身を除く): 69459652

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 37, 52, 65, 73, 74, 130, 146, 148, 185, 260, 292, 365, 370, 481, 730, 740, 949, 962, 1460, 1898, 1924, 2405, 2701, 3796, 4745, 4810, 5329, 5402, 9490, 9620, 10658, 10804, 13505, 18980, 21316, 26645, 27010, 35113, 53290, 54020, 69277, 70226, 106580, 138554, 140452, 175565, 197173, 277108, 346385, 351130, 394346, 692770, 702260, 788692, 985865, 1385540, 1971730, 2563249, 3943460, 5126498, 10252996, 12816245, 25632490, 51264980]

約数ペア:

[(1, 51264980), (2, 25632490), (4, 12816245), (5, 10252996), (10, 5126498), (13, 3943460), (20, 2563249), (26, 1971730), (37, 1385540), (52, 985865), (65, 788692), (73, 702260), (74, 692770), (130, 394346), (146, 351130), (148, 346385), (185, 277108), (260, 197173), (292, 175565), (365, 140452), (370, 138554), (481, 106580), (730, 70226), (740, 69277), (949, 54020), (962, 53290), (1460, 35113), (1898, 27010), (1924, 26645), (2405, 21316), (2701, 18980), (3796, 13505), (4745, 10804), (4810, 10658), (5329, 9620), (5402, 9490)]