21901950

素因数分解:

$2^1\times 3^2\times 5^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{409}}^1$

素因数の和:451

約数の個数: 144

約数和(自身を含む): 71379360

約数和(自身を除く): 49477410

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 17, 18, 21, 25, 30, 34, 35, 42, 45, 50, 51, 63, 70, 75, 85, 90, 102, 105, 119, 126, 150, 153, 170, 175, 210, 225, 238, 255, 306, 315, 350, 357, 409, 425, 450, 510, 525, 595, 630, 714, 765, 818, 850, 1050, 1071, 1190, 1227, 1275, 1530, 1575, 1785, 2045, 2142, 2454, 2550, 2863, 2975, 3150, 3570, 3681, 3825, 4090, 5355, 5726, 5950, 6135, 6953, 7362, 7650, 8589, 8925, 10225, 10710, 12270, 13906, 14315, 17178, 17850, 18405, 20450, 20859, 25767, 26775, 28630, 30675, 34765, 36810, 41718, 42945, 48671, 51534, 53550, 61350, 62577, 69530, 71575, 85890, 92025, 97342, 104295, 125154, 128835, 143150, 146013, 173825, 184050, 208590, 214725, 243355, 257670, 292026, 312885, 347650, 429450, 438039, 486710, 521475, 625770, 644175, 730065, 876078, 1042950, 1216775, 1288350, 1460130, 1564425, 2190195, 2433550, 3128850, 3650325, 4380390, 7300650, 10950975, 21901950]

約数ペア:

[(1, 21901950), (2, 10950975), (3, 7300650), (5, 4380390), (6, 3650325), (7, 3128850), (9, 2433550), (10, 2190195), (14, 1564425), (15, 1460130), (17, 1288350), (18, 1216775), (21, 1042950), (25, 876078), (30, 730065), (34, 644175), (35, 625770), (42, 521475), (45, 486710), (50, 438039), (51, 429450), (63, 347650), (70, 312885), (75, 292026), (85, 257670), (90, 243355), (102, 214725), (105, 208590), (119, 184050), (126, 173825), (150, 146013), (153, 143150), (170, 128835), (175, 125154), (210, 104295), (225, 97342), (238, 92025), (255, 85890), (306, 71575), (315, 69530), (350, 62577), (357, 61350), (409, 53550), (425, 51534), (450, 48671), (510, 42945), (525, 41718), (595, 36810), (630, 34765), (714, 30675), (765, 28630), (818, 26775), (850, 25767), (1050, 20859), (1071, 20450), (1190, 18405), (1227, 17850), (1275, 17178), (1530, 14315), (1575, 13906), (1785, 12270), (2045, 10710), (2142, 10225), (2454, 8925), (2550, 8589), (2863, 7650), (2975, 7362), (3150, 6953), (3570, 6135), (3681, 5950), (3825, 5726), (4090, 5355)]