81168228

素因数分解:

$2^2\times 3^2\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{2239}}^1$

素因数の和:2321

約数の個数: 72

約数和(自身を含む): 220147200

約数和(自身を除く): 138978972

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 19, 36, 38, 53, 57, 76, 106, 114, 159, 171, 212, 228, 318, 342, 477, 636, 684, 954, 1007, 1908, 2014, 2239, 3021, 4028, 4478, 6042, 6717, 8956, 9063, 12084, 13434, 18126, 20151, 26868, 36252, 40302, 42541, 80604, 85082, 118667, 127623, 170164, 237334, 255246, 356001, 382869, 474668, 510492, 712002, 765738, 1068003, 1424004, 1531476, 2136006, 2254673, 4272012, 4509346, 6764019, 9018692, 13528038, 20292057, 27056076, 40584114, 81168228]

約数ペア:

[(1, 81168228), (2, 40584114), (3, 27056076), (4, 20292057), (6, 13528038), (9, 9018692), (12, 6764019), (18, 4509346), (19, 4272012), (36, 2254673), (38, 2136006), (53, 1531476), (57, 1424004), (76, 1068003), (106, 765738), (114, 712002), (159, 510492), (171, 474668), (212, 382869), (228, 356001), (318, 255246), (342, 237334), (477, 170164), (636, 127623), (684, 118667), (954, 85082), (1007, 80604), (1908, 42541), (2014, 40302), (2239, 36252), (3021, 26868), (4028, 20151), (4478, 18126), (6042, 13434), (6717, 12084), (8956, 9063)]