12642860

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{241}}^1$

素因数の和:354

約数の個数: 48

約数和(自身を含む): 27727392

約数和(自身を除く): 15084532

約数列:

[1, 2, 4, 5, 10, 20, 43, 61, 86, 122, 172, 215, 241, 244, 305, 430, 482, 610, 860, 964, 1205, 1220, 2410, 2623, 4820, 5246, 10363, 10492, 13115, 14701, 20726, 26230, 29402, 41452, 51815, 52460, 58804, 73505, 103630, 147010, 207260, 294020, 632143, 1264286, 2528572, 3160715, 6321430, 12642860]

約数ペア:

[(1, 12642860), (2, 6321430), (4, 3160715), (5, 2528572), (10, 1264286), (20, 632143), (43, 294020), (61, 207260), (86, 147010), (122, 103630), (172, 73505), (215, 58804), (241, 52460), (244, 51815), (305, 41452), (430, 29402), (482, 26230), (610, 20726), (860, 14701), (964, 13115), (1205, 10492), (1220, 10363), (2410, 5246), (2623, 4820)]