19740645

素因数分解:

$3^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{89}}^1$

素因数の和:187

約数の個数: 64

約数和(自身を含む): 37324800

約数和(自身を除く): 17584155

約数列:

[1, 3, 5, 9, 15, 27, 31, 45, 53, 89, 93, 135, 155, 159, 265, 267, 279, 445, 465, 477, 795, 801, 837, 1335, 1395, 1431, 1643, 2385, 2403, 2759, 4005, 4185, 4717, 4929, 7155, 8215, 8277, 12015, 13795, 14151, 14787, 23585, 24645, 24831, 41385, 42453, 44361, 70755, 73935, 74493, 124155, 127359, 146227, 212265, 221805, 372465, 438681, 636795, 731135, 1316043, 2193405, 3948129, 6580215, 19740645]

約数ペア:

[(1, 19740645), (3, 6580215), (5, 3948129), (9, 2193405), (15, 1316043), (27, 731135), (31, 636795), (45, 438681), (53, 372465), (89, 221805), (93, 212265), (135, 146227), (155, 127359), (159, 124155), (265, 74493), (267, 73935), (279, 70755), (445, 44361), (465, 42453), (477, 41385), (795, 24831), (801, 24645), (837, 23585), (1335, 14787), (1395, 14151), (1431, 13795), (1643, 12015), (2385, 8277), (2403, 8215), (2759, 7155), (4005, 4929), (4185, 4717)]