21081444490

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{419}}^1\times {\mathrm{421}}^1$

素因数の和:920

約数の個数: 128

約数和(自身を含む): 43643577600

約数和(自身を除く): 22562133110

約数列:

[1, 2, 5, 10, 17, 19, 34, 37, 38, 74, 85, 95, 170, 185, 190, 323, 370, 419, 421, 629, 646, 703, 838, 842, 1258, 1406, 1615, 2095, 2105, 3145, 3230, 3515, 4190, 4210, 6290, 7030, 7123, 7157, 7961, 7999, 11951, 14246, 14314, 15503, 15577, 15922, 15998, 23902, 31006, 31154, 35615, 35785, 39805, 39995, 59755, 71230, 71570, 77515, 77885, 79610, 79990, 119510, 135337, 135983, 155030, 155770, 176399, 263551, 264809, 270674, 271966, 294557, 295963, 352798, 527102, 529618, 589114, 591926, 676685, 679915, 881995, 1317755, 1324045, 1353370, 1359830, 1472785, 1479815, 1763990, 2635510, 2648090, 2945570, 2959630, 2998783, 3351581, 5007469, 5031371, 5997566, 6526763, 6703162, 10014938, 10062742, 13053526, 14993915, 16757905, 25037345, 25156855, 29987830, 32633815, 33515810, 50074690, 50313710, 56976877, 65267630, 110954971, 113953754, 124008497, 221909942, 248016994, 284884385, 554774855, 569768770, 620042485, 1109549710, 1240084970, 2108144449, 4216288898, 10540722245, 21081444490]

約数ペア:

[(1, 21081444490), (2, 10540722245), (5, 4216288898), (10, 2108144449), (17, 1240084970), (19, 1109549710), (34, 620042485), (37, 569768770), (38, 554774855), (74, 284884385), (85, 248016994), (95, 221909942), (170, 124008497), (185, 113953754), (190, 110954971), (323, 65267630), (370, 56976877), (419, 50313710), (421, 50074690), (629, 33515810), (646, 32633815), (703, 29987830), (838, 25156855), (842, 25037345), (1258, 16757905), (1406, 14993915), (1615, 13053526), (2095, 10062742), (2105, 10014938), (3145, 6703162), (3230, 6526763), (3515, 5997566), (4190, 5031371), (4210, 5007469), (6290, 3351581), (7030, 2998783), (7123, 2959630), (7157, 2945570), (7961, 2648090), (7999, 2635510), (11951, 1763990), (14246, 1479815), (14314, 1472785), (15503, 1359830), (15577, 1353370), (15922, 1324045), (15998, 1317755), (23902, 881995), (31006, 679915), (31154, 676685), (35615, 591926), (35785, 589114), (39805, 529618), (39995, 527102), (59755, 352798), (71230, 295963), (71570, 294557), (77515, 271966), (77885, 270674), (79610, 264809), (79990, 263551), (119510, 176399), (135337, 155770), (135983, 155030)]