20977290

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{3821}}^1$

素因数の和:3895

約数の個数: 48

約数和(自身を含む): 55449576

約数和(自身を除く): 34472286

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, 3821, 5490, 7642, 11463, 19105, 22926, 34389, 38210, 57315, 68778, 114630, 171945, 233081, 343890, 466162, 699243, 1165405, 1398486, 2097729, 2330810, 3496215, 4195458, 6992430, 10488645, 20977290]

約数ペア:

[(1, 20977290), (2, 10488645), (3, 6992430), (5, 4195458), (6, 3496215), (9, 2330810), (10, 2097729), (15, 1398486), (18, 1165405), (30, 699243), (45, 466162), (61, 343890), (90, 233081), (122, 171945), (183, 114630), (305, 68778), (366, 57315), (549, 38210), (610, 34389), (915, 22926), (1098, 19105), (1830, 11463), (2745, 7642), (3821, 5490)]