19545620

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{433}}^1$

素因数の和:540

約数の個数: 48

約数和(自身を含む): 42945168

約数和(自身を除く): 23399548

約数列:

[1, 2, 4, 5, 10, 20, 37, 61, 74, 122, 148, 185, 244, 305, 370, 433, 610, 740, 866, 1220, 1732, 2165, 2257, 4330, 4514, 8660, 9028, 11285, 16021, 22570, 26413, 32042, 45140, 52826, 64084, 80105, 105652, 132065, 160210, 264130, 320420, 528260, 977281, 1954562, 3909124, 4886405, 9772810, 19545620]

約数ペア:

[(1, 19545620), (2, 9772810), (4, 4886405), (5, 3909124), (10, 1954562), (20, 977281), (37, 528260), (61, 320420), (74, 264130), (122, 160210), (148, 132065), (185, 105652), (244, 80105), (305, 64084), (370, 52826), (433, 45140), (610, 32042), (740, 26413), (866, 22570), (1220, 16021), (1732, 11285), (2165, 9028), (2257, 8660), (4330, 4514)]