20731694705

素因数分解:

$5^1\times {\mathrm{43}}^1\times {\mathrm{389}}^1\times {\mathrm{487}}^1\times {\mathrm{509}}^1$

素因数の和:1433

約数の個数: 32

約数和(自身を含む): 25624684800

約数和(自身を除く): 4892990095

約数列:

[1, 5, 43, 215, 389, 487, 509, 1945, 2435, 2545, 16727, 20941, 21887, 83635, 104705, 109435, 189443, 198001, 247883, 947215, 990005, 1239415, 8146049, 8514043, 10658969, 40730245, 42570215, 53294845, 96426487, 482132435, 4146338941, 20731694705]

約数ペア:

[(1, 20731694705), (5, 4146338941), (43, 482132435), (215, 96426487), (389, 53294845), (487, 42570215), (509, 40730245), (1945, 10658969), (2435, 8514043), (2545, 8146049), (16727, 1239415), (20941, 990005), (21887, 947215), (83635, 247883), (104705, 198001), (109435, 189443)]