19345540

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{101}}^1\times {\mathrm{157}}^1$

素因数の和:328

約数の個数: 48

約数和(自身を含む): 41966064

約数和(自身を除く): 22620524

約数列:

[1, 2, 4, 5, 10, 20, 61, 101, 122, 157, 202, 244, 305, 314, 404, 505, 610, 628, 785, 1010, 1220, 1570, 2020, 3140, 6161, 9577, 12322, 15857, 19154, 24644, 30805, 31714, 38308, 47885, 61610, 63428, 79285, 95770, 123220, 158570, 191540, 317140, 967277, 1934554, 3869108, 4836385, 9672770, 19345540]

約数ペア:

[(1, 19345540), (2, 9672770), (4, 4836385), (5, 3869108), (10, 1934554), (20, 967277), (61, 317140), (101, 191540), (122, 158570), (157, 123220), (202, 95770), (244, 79285), (305, 63428), (314, 61610), (404, 47885), (505, 38308), (610, 31714), (628, 30805), (785, 24644), (1010, 19154), (1220, 15857), (1570, 12322), (2020, 9577), (3140, 6161)]