388640780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{151}}^1\times {\mathrm{11699}}^1$

素因数の和:11870

約数の個数: 48

約数和(自身を含む): 896313600

約数和(自身を除く): 507672820

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 151, 220, 302, 604, 755, 1510, 1661, 3020, 3322, 6644, 8305, 11699, 16610, 23398, 33220, 46796, 58495, 116990, 128689, 233980, 257378, 514756, 643445, 1286890, 1766549, 2573780, 3533098, 7066196, 8832745, 17665490, 19432039, 35330980, 38864078, 77728156, 97160195, 194320390, 388640780]

約数ペア:

[(1, 388640780), (2, 194320390), (4, 97160195), (5, 77728156), (10, 38864078), (11, 35330980), (20, 19432039), (22, 17665490), (44, 8832745), (55, 7066196), (110, 3533098), (151, 2573780), (220, 1766549), (302, 1286890), (604, 643445), (755, 514756), (1510, 257378), (1661, 233980), (3020, 128689), (3322, 116990), (6644, 58495), (8305, 46796), (11699, 33220), (16610, 23398)]