21992940

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{2003}}^1$

素因数の和:2079

約数の個数: 72

約数和(自身を含む): 67839408

約数和(自身を除く): 45846468

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 61, 90, 122, 180, 183, 244, 305, 366, 549, 610, 732, 915, 1098, 1220, 1830, 2003, 2196, 2745, 3660, 4006, 5490, 6009, 8012, 10015, 10980, 12018, 18027, 20030, 24036, 30045, 36054, 40060, 60090, 72108, 90135, 120180, 122183, 180270, 244366, 360540, 366549, 488732, 610915, 733098, 1099647, 1221830, 1466196, 1832745, 2199294, 2443660, 3665490, 4398588, 5498235, 7330980, 10996470, 21992940]

約数ペア:

[(1, 21992940), (2, 10996470), (3, 7330980), (4, 5498235), (5, 4398588), (6, 3665490), (9, 2443660), (10, 2199294), (12, 1832745), (15, 1466196), (18, 1221830), (20, 1099647), (30, 733098), (36, 610915), (45, 488732), (60, 366549), (61, 360540), (90, 244366), (122, 180270), (180, 122183), (183, 120180), (244, 90135), (305, 72108), (366, 60090), (549, 40060), (610, 36054), (732, 30045), (915, 24036), (1098, 20030), (1220, 18027), (1830, 12018), (2003, 10980), (2196, 10015), (2745, 8012), (3660, 6009), (4006, 5490)]