20988270

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{3823}}^1$

素因数の和:3897

約数の個数: 48

約数和(自身を含む): 55478592

約数和(自身を除く): 34490322

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 61, 90, 122, 183, 305, 366, 549, 610, 915, 1098, 1830, 2745, 3823, 5490, 7646, 11469, 19115, 22938, 34407, 38230, 57345, 68814, 114690, 172035, 233203, 344070, 466406, 699609, 1166015, 1399218, 2098827, 2332030, 3498045, 4197654, 6996090, 10494135, 20988270]

約数ペア:

[(1, 20988270), (2, 10494135), (3, 6996090), (5, 4197654), (6, 3498045), (9, 2332030), (10, 2098827), (15, 1399218), (18, 1166015), (30, 699609), (45, 466406), (61, 344070), (90, 233203), (122, 172035), (183, 114690), (305, 68814), (366, 57345), (549, 38230), (610, 34407), (915, 22938), (1098, 19115), (1830, 11469), (2745, 7646), (3823, 5490)]