21311388

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{4451}}^1$

素因数の和:4487

約数の個数: 72

約数和(自身を含む): 64821120

約数和(自身を除く): 43509732

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 19, 21, 28, 36, 38, 42, 57, 63, 76, 84, 114, 126, 133, 171, 228, 252, 266, 342, 399, 532, 684, 798, 1197, 1596, 2394, 4451, 4788, 8902, 13353, 17804, 26706, 31157, 40059, 53412, 62314, 80118, 84569, 93471, 124628, 160236, 169138, 186942, 253707, 280413, 338276, 373884, 507414, 560826, 591983, 761121, 1014828, 1121652, 1183966, 1522242, 1775949, 2367932, 3044484, 3551898, 5327847, 7103796, 10655694, 21311388]

約数ペア:

[(1, 21311388), (2, 10655694), (3, 7103796), (4, 5327847), (6, 3551898), (7, 3044484), (9, 2367932), (12, 1775949), (14, 1522242), (18, 1183966), (19, 1121652), (21, 1014828), (28, 761121), (36, 591983), (38, 560826), (42, 507414), (57, 373884), (63, 338276), (76, 280413), (84, 253707), (114, 186942), (126, 169138), (133, 160236), (171, 124628), (228, 93471), (252, 84569), (266, 80118), (342, 62314), (399, 53412), (532, 40059), (684, 31157), (798, 26706), (1197, 17804), (1596, 13353), (2394, 8902), (4451, 4788)]