20211657928

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{211}}^1\times {\mathrm{6761}}^1$

素因数の和:7019

約数の個数: 128

約数和(自身を含む): 49543280640

約数和(自身を除く): 29331622712

約数列:

[1, 2, 4, 7, 8, 11, 14, 22, 23, 28, 44, 46, 56, 77, 88, 92, 154, 161, 184, 211, 253, 308, 322, 422, 506, 616, 644, 844, 1012, 1288, 1477, 1688, 1771, 2024, 2321, 2954, 3542, 4642, 4853, 5908, 6761, 7084, 9284, 9706, 11816, 13522, 14168, 16247, 18568, 19412, 27044, 32494, 33971, 38824, 47327, 53383, 54088, 64988, 67942, 74371, 94654, 106766, 129976, 135884, 148742, 155503, 189308, 213532, 271768, 297484, 311006, 373681, 378616, 427064, 520597, 594968, 622012, 747362, 1041194, 1088521, 1244024, 1426571, 1494724, 1710533, 2082388, 2177042, 2853142, 2989448, 3421066, 4164776, 4354084, 5706284, 6842132, 8708168, 9985997, 11412568, 11973731, 13684264, 15692281, 19971994, 23947462, 31384562, 32811133, 39943988, 47894924, 62769124, 65622266, 79887976, 95789848, 109845967, 125538248, 131244532, 219691934, 229677931, 262489064, 360922463, 439383868, 459355862, 721844926, 878767736, 918711724, 1443689852, 1837423448, 2526457241, 2887379704, 5052914482, 10105828964, 20211657928]

約数ペア:

[(1, 20211657928), (2, 10105828964), (4, 5052914482), (7, 2887379704), (8, 2526457241), (11, 1837423448), (14, 1443689852), (22, 918711724), (23, 878767736), (28, 721844926), (44, 459355862), (46, 439383868), (56, 360922463), (77, 262489064), (88, 229677931), (92, 219691934), (154, 131244532), (161, 125538248), (184, 109845967), (211, 95789848), (253, 79887976), (308, 65622266), (322, 62769124), (422, 47894924), (506, 39943988), (616, 32811133), (644, 31384562), (844, 23947462), (1012, 19971994), (1288, 15692281), (1477, 13684264), (1688, 11973731), (1771, 11412568), (2024, 9985997), (2321, 8708168), (2954, 6842132), (3542, 5706284), (4642, 4354084), (4853, 4164776), (5908, 3421066), (6761, 2989448), (7084, 2853142), (9284, 2177042), (9706, 2082388), (11816, 1710533), (13522, 1494724), (14168, 1426571), (16247, 1244024), (18568, 1088521), (19412, 1041194), (27044, 747362), (32494, 622012), (33971, 594968), (38824, 520597), (47327, 427064), (53383, 378616), (54088, 373681), (64988, 311006), (67942, 297484), (74371, 271768), (94654, 213532), (106766, 189308), (129976, 155503), (135884, 148742)]