20565540

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{1873}}^1$

素因数の和:1949

約数の個数: 72

約数和(自身を含む): 63438648

約数和(自身を除く): 42873108

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, 1873, 2196, 2745, 3660, 3746, 5490, 5619, 7492, 9365, 10980, 11238, 16857, 18730, 22476, 28095, 33714, 37460, 56190, 67428, 84285, 112380, 114253, 168570, 228506, 337140, 342759, 457012, 571265, 685518, 1028277, 1142530, 1371036, 1713795, 2056554, 2285060, 3427590, 4113108, 5141385, 6855180, 10282770, 20565540]

約数ペア:

[(1, 20565540), (2, 10282770), (3, 6855180), (4, 5141385), (5, 4113108), (6, 3427590), (9, 2285060), (10, 2056554), (12, 1713795), (15, 1371036), (18, 1142530), (20, 1028277), (30, 685518), (36, 571265), (45, 457012), (60, 342759), (61, 337140), (90, 228506), (122, 168570), (180, 114253), (183, 112380), (244, 84285), (305, 67428), (366, 56190), (549, 37460), (610, 33714), (732, 28095), (915, 22476), (1098, 18730), (1220, 16857), (1830, 11238), (1873, 10980), (2196, 9365), (2745, 7492), (3660, 5619), (3746, 5490)]