21303720

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{59}}^2$

素因数の和:152

約数の個数: 144

約数和(自身を含む): 74573460

約数和(自身を除く): 53269740

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 17, 18, 20, 24, 30, 34, 36, 40, 45, 51, 59, 60, 68, 72, 85, 90, 102, 118, 120, 136, 153, 170, 177, 180, 204, 236, 255, 295, 306, 340, 354, 360, 408, 472, 510, 531, 590, 612, 680, 708, 765, 885, 1003, 1020, 1062, 1180, 1224, 1416, 1530, 1770, 2006, 2040, 2124, 2360, 2655, 3009, 3060, 3481, 3540, 4012, 4248, 5015, 5310, 6018, 6120, 6962, 7080, 8024, 9027, 10030, 10443, 10620, 12036, 13924, 15045, 17405, 18054, 20060, 20886, 21240, 24072, 27848, 30090, 31329, 34810, 36108, 40120, 41772, 45135, 52215, 59177, 60180, 62658, 69620, 72216, 83544, 90270, 104430, 118354, 120360, 125316, 139240, 156645, 177531, 180540, 208860, 236708, 250632, 295885, 313290, 355062, 361080, 417720, 473416, 532593, 591770, 626580, 710124, 887655, 1065186, 1183540, 1253160, 1420248, 1775310, 2130372, 2367080, 2662965, 3550620, 4260744, 5325930, 7101240, 10651860, 21303720]

約数ペア:

[(1, 21303720), (2, 10651860), (3, 7101240), (4, 5325930), (5, 4260744), (6, 3550620), (8, 2662965), (9, 2367080), (10, 2130372), (12, 1775310), (15, 1420248), (17, 1253160), (18, 1183540), (20, 1065186), (24, 887655), (30, 710124), (34, 626580), (36, 591770), (40, 532593), (45, 473416), (51, 417720), (59, 361080), (60, 355062), (68, 313290), (72, 295885), (85, 250632), (90, 236708), (102, 208860), (118, 180540), (120, 177531), (136, 156645), (153, 139240), (170, 125316), (177, 120360), (180, 118354), (204, 104430), (236, 90270), (255, 83544), (295, 72216), (306, 69620), (340, 62658), (354, 60180), (360, 59177), (408, 52215), (472, 45135), (510, 41772), (531, 40120), (590, 36108), (612, 34810), (680, 31329), (708, 30090), (765, 27848), (885, 24072), (1003, 21240), (1020, 20886), (1062, 20060), (1180, 18054), (1224, 17405), (1416, 15045), (1530, 13924), (1770, 12036), (2006, 10620), (2040, 10443), (2124, 10030), (2360, 9027), (2655, 8024), (3009, 7080), (3060, 6962), (3481, 6120), (3540, 6018), (4012, 5310), (4248, 5015)]