21055736

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{3319}}^1$

素因数の和:3399

約数の個数: 32

約数和(自身を含む): 43226400

約数和(自身を除く): 22170664

約数列:

[1, 2, 4, 8, 13, 26, 52, 61, 104, 122, 244, 488, 793, 1586, 3172, 3319, 6344, 6638, 13276, 26552, 43147, 86294, 172588, 202459, 345176, 404918, 809836, 1619672, 2631967, 5263934, 10527868, 21055736]

約数ペア:

[(1, 21055736), (2, 10527868), (4, 5263934), (8, 2631967), (13, 1619672), (26, 809836), (52, 404918), (61, 345176), (104, 202459), (122, 172588), (244, 86294), (488, 43147), (793, 26552), (1586, 13276), (3172, 6638), (3319, 6344)]