21615540

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{283}}^1$

素因数の和:381

約数の個数: 96

約数和(自身を含む): 64888320

約数和(自身を除く): 43272780

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 19, 20, 30, 38, 57, 60, 67, 76, 95, 114, 134, 190, 201, 228, 268, 283, 285, 335, 380, 402, 566, 570, 670, 804, 849, 1005, 1132, 1140, 1273, 1340, 1415, 1698, 2010, 2546, 2830, 3396, 3819, 4020, 4245, 5092, 5377, 5660, 6365, 7638, 8490, 10754, 12730, 15276, 16131, 16980, 18961, 19095, 21508, 25460, 26885, 32262, 37922, 38190, 53770, 56883, 64524, 75844, 76380, 80655, 94805, 107540, 113766, 161310, 189610, 227532, 284415, 322620, 360259, 379220, 568830, 720518, 1080777, 1137660, 1441036, 1801295, 2161554, 3602590, 4323108, 5403885, 7205180, 10807770, 21615540]

約数ペア:

[(1, 21615540), (2, 10807770), (3, 7205180), (4, 5403885), (5, 4323108), (6, 3602590), (10, 2161554), (12, 1801295), (15, 1441036), (19, 1137660), (20, 1080777), (30, 720518), (38, 568830), (57, 379220), (60, 360259), (67, 322620), (76, 284415), (95, 227532), (114, 189610), (134, 161310), (190, 113766), (201, 107540), (228, 94805), (268, 80655), (283, 76380), (285, 75844), (335, 64524), (380, 56883), (402, 53770), (566, 38190), (570, 37922), (670, 32262), (804, 26885), (849, 25460), (1005, 21508), (1132, 19095), (1140, 18961), (1273, 16980), (1340, 16131), (1415, 15276), (1698, 12730), (2010, 10754), (2546, 8490), (2830, 7638), (3396, 6365), (3819, 5660), (4020, 5377), (4245, 5092)]