19155220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{2243}}^1$

素因数の和:2320

約数の個数: 48

約数和(自身を含む): 46747008

約数和(自身を除く): 27591788

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 61, 70, 122, 140, 244, 305, 427, 610, 854, 1220, 1708, 2135, 2243, 4270, 4486, 8540, 8972, 11215, 15701, 22430, 31402, 44860, 62804, 78505, 136823, 157010, 273646, 314020, 547292, 684115, 957761, 1368230, 1915522, 2736460, 3831044, 4788805, 9577610, 19155220]

約数ペア:

[(1, 19155220), (2, 9577610), (4, 4788805), (5, 3831044), (7, 2736460), (10, 1915522), (14, 1368230), (20, 957761), (28, 684115), (35, 547292), (61, 314020), (70, 273646), (122, 157010), (140, 136823), (244, 78505), (305, 62804), (427, 44860), (610, 31402), (854, 22430), (1220, 15701), (1708, 11215), (2135, 8972), (2243, 8540), (4270, 4486)]