20921382145

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{103}}^1\times {\mathrm{19559}}^1$

素因数の和:19765

約数の個数: 32

約数和(自身を含む): 26559037440

約数和(自身を除く): 5637655295

約数列:

[1, 5, 31, 67, 103, 155, 335, 515, 2077, 3193, 6901, 10385, 15965, 19559, 34505, 97795, 213931, 606329, 1069655, 1310453, 2014577, 3031645, 6552265, 10072885, 40624043, 62451887, 134976659, 203120215, 312259435, 674883295, 4184276429, 20921382145]

約数ペア:

[(1, 20921382145), (5, 4184276429), (31, 674883295), (67, 312259435), (103, 203120215), (155, 134976659), (335, 62451887), (515, 40624043), (2077, 10072885), (3193, 6552265), (6901, 3031645), (10385, 2014577), (15965, 1310453), (19559, 1069655), (34505, 606329), (97795, 213931)]