19356220

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{683}}^1$

素因数の和:814

約数の個数: 48

約数和(自身を含む): 44241120

約数和(自身を除く): 24884900

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 109, 130, 218, 260, 436, 545, 683, 1090, 1366, 1417, 2180, 2732, 2834, 3415, 5668, 6830, 7085, 8879, 13660, 14170, 17758, 28340, 35516, 44395, 74447, 88790, 148894, 177580, 297788, 372235, 744470, 967811, 1488940, 1935622, 3871244, 4839055, 9678110, 19356220]

約数ペア:

[(1, 19356220), (2, 9678110), (4, 4839055), (5, 3871244), (10, 1935622), (13, 1488940), (20, 967811), (26, 744470), (52, 372235), (65, 297788), (109, 177580), (130, 148894), (218, 88790), (260, 74447), (436, 44395), (545, 35516), (683, 28340), (1090, 17758), (1366, 14170), (1417, 13660), (2180, 8879), (2732, 7085), (2834, 6830), (3415, 5668)]