81496220

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{307}}^1\times {\mathrm{1021}}^1$

素因数の和:1350

約数の個数: 48

約数和(自身を含む): 185088288

約数和(自身を除く): 103592068

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 307, 614, 1021, 1228, 1535, 2042, 3070, 3991, 4084, 5105, 6140, 7982, 10210, 13273, 15964, 19955, 20420, 26546, 39910, 53092, 66365, 79820, 132730, 265460, 313447, 626894, 1253788, 1567235, 3134470, 4074811, 6268940, 8149622, 16299244, 20374055, 40748110, 81496220]

約数ペア:

[(1, 81496220), (2, 40748110), (4, 20374055), (5, 16299244), (10, 8149622), (13, 6268940), (20, 4074811), (26, 3134470), (52, 1567235), (65, 1253788), (130, 626894), (260, 313447), (307, 265460), (614, 132730), (1021, 79820), (1228, 66365), (1535, 53092), (2042, 39910), (3070, 26546), (3991, 20420), (4084, 19955), (5105, 15964), (6140, 13273), (7982, 10210)]