251393940

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{10501}}^1$

素因数の和:10542

約数の個数: 144

約数和(自身を含む): 917454720

約数和(自身を除く): 666060780

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 19, 20, 21, 28, 30, 35, 36, 38, 42, 45, 57, 60, 63, 70, 76, 84, 90, 95, 105, 114, 126, 133, 140, 171, 180, 190, 210, 228, 252, 266, 285, 315, 342, 380, 399, 420, 532, 570, 630, 665, 684, 798, 855, 1140, 1197, 1260, 1330, 1596, 1710, 1995, 2394, 2660, 3420, 3990, 4788, 5985, 7980, 10501, 11970, 21002, 23940, 31503, 42004, 52505, 63006, 73507, 94509, 105010, 126012, 147014, 157515, 189018, 199519, 210020, 220521, 294028, 315030, 367535, 378036, 399038, 441042, 472545, 598557, 630060, 661563, 735070, 798076, 882084, 945090, 997595, 1102605, 1197114, 1323126, 1396633, 1470140, 1795671, 1890180, 1995190, 2205210, 2394228, 2646252, 2793266, 2992785, 3307815, 3591342, 3990380, 4189899, 4410420, 5586532, 5985570, 6615630, 6983165, 7182684, 8379798, 8978355, 11971140, 12569697, 13231260, 13966330, 16759596, 17956710, 20949495, 25139394, 27932660, 35913420, 41898990, 50278788, 62848485, 83797980, 125696970, 251393940]

約数ペア:

[(1, 251393940), (2, 125696970), (3, 83797980), (4, 62848485), (5, 50278788), (6, 41898990), (7, 35913420), (9, 27932660), (10, 25139394), (12, 20949495), (14, 17956710), (15, 16759596), (18, 13966330), (19, 13231260), (20, 12569697), (21, 11971140), (28, 8978355), (30, 8379798), (35, 7182684), (36, 6983165), (38, 6615630), (42, 5985570), (45, 5586532), (57, 4410420), (60, 4189899), (63, 3990380), (70, 3591342), (76, 3307815), (84, 2992785), (90, 2793266), (95, 2646252), (105, 2394228), (114, 2205210), (126, 1995190), (133, 1890180), (140, 1795671), (171, 1470140), (180, 1396633), (190, 1323126), (210, 1197114), (228, 1102605), (252, 997595), (266, 945090), (285, 882084), (315, 798076), (342, 735070), (380, 661563), (399, 630060), (420, 598557), (532, 472545), (570, 441042), (630, 399038), (665, 378036), (684, 367535), (798, 315030), (855, 294028), (1140, 220521), (1197, 210020), (1260, 199519), (1330, 189018), (1596, 157515), (1710, 147014), (1995, 126012), (2394, 105010), (2660, 94509), (3420, 73507), (3990, 63006), (4788, 52505), (5985, 42004), (7980, 31503), (10501, 23940), (11970, 21002)]