66484520

素因数分解:

$2^3\times 5^1\times {\mathrm{641}}^1\times {\mathrm{2593}}^1$

素因数の和:3245

約数の個数: 32

約数和(自身を含む): 149881320

約数和(自身を除く): 83396800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 641, 1282, 2564, 2593, 3205, 5128, 5186, 6410, 10372, 12820, 12965, 20744, 25640, 25930, 51860, 103720, 1662113, 3324226, 6648452, 8310565, 13296904, 16621130, 33242260, 66484520]

約数ペア:

[(1, 66484520), (2, 33242260), (4, 16621130), (5, 13296904), (8, 8310565), (10, 6648452), (20, 3324226), (40, 1662113), (641, 103720), (1282, 51860), (2564, 25930), (2593, 25640), (3205, 20744), (5128, 12965), (5186, 12820), (6410, 10372)]