28431828

素因数分解:

$2^2\times 3^2\times {\mathrm{19}}^1\times {\mathrm{197}}^1\times {\mathrm{211}}^1$

素因数の和:437

約数の個数: 72

約数和(自身を含む): 76396320

約数和(自身を除く): 47964492

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 19, 36, 38, 57, 76, 114, 171, 197, 211, 228, 342, 394, 422, 591, 633, 684, 788, 844, 1182, 1266, 1773, 1899, 2364, 2532, 3546, 3743, 3798, 4009, 7092, 7486, 7596, 8018, 11229, 12027, 14972, 16036, 22458, 24054, 33687, 36081, 41567, 44916, 48108, 67374, 72162, 83134, 124701, 134748, 144324, 166268, 249402, 374103, 498804, 748206, 789773, 1496412, 1579546, 2369319, 3159092, 4738638, 7107957, 9477276, 14215914, 28431828]

約数ペア:

[(1, 28431828), (2, 14215914), (3, 9477276), (4, 7107957), (6, 4738638), (9, 3159092), (12, 2369319), (18, 1579546), (19, 1496412), (36, 789773), (38, 748206), (57, 498804), (76, 374103), (114, 249402), (171, 166268), (197, 144324), (211, 134748), (228, 124701), (342, 83134), (394, 72162), (422, 67374), (591, 48108), (633, 44916), (684, 41567), (788, 36081), (844, 33687), (1182, 24054), (1266, 22458), (1773, 16036), (1899, 14972), (2364, 12027), (2532, 11229), (3546, 8018), (3743, 7596), (3798, 7486), (4009, 7092)]