21000751940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{120293}}^1$

素因数の和:120381

約数の個数: 96

約数和(自身を含む): 53352794880

約数和(自身を除く): 32352042940

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 29, 35, 43, 58, 70, 86, 116, 140, 145, 172, 203, 215, 290, 301, 406, 430, 580, 602, 812, 860, 1015, 1204, 1247, 1505, 2030, 2494, 3010, 4060, 4988, 6020, 6235, 8729, 12470, 17458, 24940, 34916, 43645, 87290, 120293, 174580, 240586, 481172, 601465, 842051, 1202930, 1684102, 2405860, 3368204, 3488497, 4210255, 5172599, 6976994, 8420510, 10345198, 13953988, 16841020, 17442485, 20690396, 24419479, 25862995, 34884970, 36208193, 48838958, 51725990, 69769940, 72416386, 97677916, 103451980, 122097395, 144832772, 150005371, 181040965, 244194790, 300010742, 362081930, 488389580, 600021484, 724163860, 750026855, 1050037597, 1500053710, 2100075194, 3000107420, 4200150388, 5250187985, 10500375970, 21000751940]

約数ペア:

[(1, 21000751940), (2, 10500375970), (4, 5250187985), (5, 4200150388), (7, 3000107420), (10, 2100075194), (14, 1500053710), (20, 1050037597), (28, 750026855), (29, 724163860), (35, 600021484), (43, 488389580), (58, 362081930), (70, 300010742), (86, 244194790), (116, 181040965), (140, 150005371), (145, 144832772), (172, 122097395), (203, 103451980), (215, 97677916), (290, 72416386), (301, 69769940), (406, 51725990), (430, 48838958), (580, 36208193), (602, 34884970), (812, 25862995), (860, 24419479), (1015, 20690396), (1204, 17442485), (1247, 16841020), (1505, 13953988), (2030, 10345198), (2494, 8420510), (3010, 6976994), (4060, 5172599), (4988, 4210255), (6020, 3488497), (6235, 3368204), (8729, 2405860), (12470, 1684102), (17458, 1202930), (24940, 842051), (34916, 601465), (43645, 481172), (87290, 240586), (120293, 174580)]