20718090

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{211}}^1\times {\mathrm{1091}}^1$

素因数の和:1315

約数の個数: 48

約数和(自身を含む): 54171936

約数和(自身を除く): 33453846

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 211, 422, 633, 1055, 1091, 1266, 1899, 2110, 2182, 3165, 3273, 3798, 5455, 6330, 6546, 9495, 9819, 10910, 16365, 18990, 19638, 32730, 49095, 98190, 230201, 460402, 690603, 1151005, 1381206, 2071809, 2302010, 3453015, 4143618, 6906030, 10359045, 20718090]

約数ペア:

[(1, 20718090), (2, 10359045), (3, 6906030), (5, 4143618), (6, 3453015), (9, 2302010), (10, 2071809), (15, 1381206), (18, 1151005), (30, 690603), (45, 460402), (90, 230201), (211, 98190), (422, 49095), (633, 32730), (1055, 19638), (1091, 18990), (1266, 16365), (1899, 10910), (2110, 9819), (2182, 9495), (3165, 6546), (3273, 6330), (3798, 5455)]