161903268

素因数分解:

$2^2\times 3^2\times {\mathrm{37}}^1\times {\mathrm{197}}^1\times {\mathrm{617}}^1$

素因数の和:861

約数の個数: 72

約数和(自身を含む): 423134712

約数和(自身を除く): 261231444

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 37, 74, 111, 148, 197, 222, 333, 394, 444, 591, 617, 666, 788, 1182, 1234, 1332, 1773, 1851, 2364, 2468, 3546, 3702, 5553, 7092, 7289, 7404, 11106, 14578, 21867, 22212, 22829, 29156, 43734, 45658, 65601, 68487, 87468, 91316, 121549, 131202, 136974, 205461, 243098, 262404, 273948, 364647, 410922, 486196, 729294, 821844, 1093941, 1458588, 2187882, 4375764, 4497313, 8994626, 13491939, 17989252, 26983878, 40475817, 53967756, 80951634, 161903268]

約数ペア:

[(1, 161903268), (2, 80951634), (3, 53967756), (4, 40475817), (6, 26983878), (9, 17989252), (12, 13491939), (18, 8994626), (36, 4497313), (37, 4375764), (74, 2187882), (111, 1458588), (148, 1093941), (197, 821844), (222, 729294), (333, 486196), (394, 410922), (444, 364647), (591, 273948), (617, 262404), (666, 243098), (788, 205461), (1182, 136974), (1234, 131202), (1332, 121549), (1773, 91316), (1851, 87468), (2364, 68487), (2468, 65601), (3546, 45658), (3702, 43734), (5553, 29156), (7092, 22829), (7289, 22212), (7404, 21867), (11106, 14578)]