2021180315

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{199}}^1$

素因数の和:313

約数の個数: 128

約数和(自身を含む): 3361996800

約数和(自身を除く): 1340816485

約数列:

[1, 5, 7, 11, 23, 31, 35, 37, 55, 77, 115, 155, 161, 185, 199, 217, 253, 259, 341, 385, 407, 713, 805, 851, 995, 1085, 1147, 1265, 1295, 1393, 1705, 1771, 2035, 2189, 2387, 2849, 3565, 4255, 4577, 4991, 5735, 5957, 6169, 6965, 7363, 7843, 8029, 8855, 9361, 10945, 11935, 12617, 14245, 15323, 22885, 24955, 26381, 29785, 30845, 32039, 36815, 39215, 40145, 43183, 46805, 50347, 51541, 54901, 63085, 65527, 67859, 76615, 80993, 88319, 131905, 141887, 160195, 169349, 184667, 215915, 228253, 251735, 257705, 274505, 290191, 327635, 339295, 352429, 404965, 441595, 475013, 566951, 709435, 846745, 923335, 993209, 1141265, 1185443, 1450955, 1560757, 1597771, 1762145, 1862839, 2031337, 2375065, 2510783, 2834755, 4966045, 5249819, 5927215, 7803785, 7988855, 9314195, 10156685, 10925299, 12553915, 13039873, 17575481, 26249095, 36748733, 54626495, 57748009, 65199365, 87877405, 183743665, 288740045, 404236063, 2021180315]

約数ペア:

[(1, 2021180315), (5, 404236063), (7, 288740045), (11, 183743665), (23, 87877405), (31, 65199365), (35, 57748009), (37, 54626495), (55, 36748733), (77, 26249095), (115, 17575481), (155, 13039873), (161, 12553915), (185, 10925299), (199, 10156685), (217, 9314195), (253, 7988855), (259, 7803785), (341, 5927215), (385, 5249819), (407, 4966045), (713, 2834755), (805, 2510783), (851, 2375065), (995, 2031337), (1085, 1862839), (1147, 1762145), (1265, 1597771), (1295, 1560757), (1393, 1450955), (1705, 1185443), (1771, 1141265), (2035, 993209), (2189, 923335), (2387, 846745), (2849, 709435), (3565, 566951), (4255, 475013), (4577, 441595), (4991, 404965), (5735, 352429), (5957, 339295), (6169, 327635), (6965, 290191), (7363, 274505), (7843, 257705), (8029, 251735), (8855, 228253), (9361, 215915), (10945, 184667), (11935, 169349), (12617, 160195), (14245, 141887), (15323, 131905), (22885, 88319), (24955, 80993), (26381, 76615), (29785, 67859), (30845, 65527), (32039, 63085), (36815, 54901), (39215, 51541), (40145, 50347), (43183, 46805)]