20136820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{53}}^1\times {\mathrm{157}}^1$

素因数の和:241

約数の個数: 72

約数和(自身を含む): 47659752

約数和(自身を除く): 27522932

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 53, 55, 106, 110, 121, 157, 212, 220, 242, 265, 314, 484, 530, 583, 605, 628, 785, 1060, 1166, 1210, 1570, 1727, 2332, 2420, 2915, 3140, 3454, 5830, 6413, 6908, 8321, 8635, 11660, 12826, 16642, 17270, 18997, 25652, 32065, 33284, 34540, 37994, 41605, 64130, 75988, 83210, 91531, 94985, 128260, 166420, 183062, 189970, 366124, 379940, 457655, 915310, 1006841, 1830620, 2013682, 4027364, 5034205, 10068410, 20136820]

約数ペア:

[(1, 20136820), (2, 10068410), (4, 5034205), (5, 4027364), (10, 2013682), (11, 1830620), (20, 1006841), (22, 915310), (44, 457655), (53, 379940), (55, 366124), (106, 189970), (110, 183062), (121, 166420), (157, 128260), (212, 94985), (220, 91531), (242, 83210), (265, 75988), (314, 64130), (484, 41605), (530, 37994), (583, 34540), (605, 33284), (628, 32065), (785, 25652), (1060, 18997), (1166, 17270), (1210, 16642), (1570, 12826), (1727, 11660), (2332, 8635), (2420, 8321), (2915, 6908), (3140, 6413), (3454, 5830)]