20004055

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{53}}^1\times {\mathrm{137}}^1$

素因数の和:243

約数の個数: 32

約数和(自身を含む): 26827200

約数和(自身を除く): 6823145

約数列:

[1, 5, 19, 29, 53, 95, 137, 145, 265, 551, 685, 1007, 1537, 2603, 2755, 3973, 5035, 7261, 7685, 13015, 19865, 29203, 36305, 75487, 137959, 146015, 210569, 377435, 689795, 1052845, 4000811, 20004055]

約数ペア:

[(1, 20004055), (5, 4000811), (19, 1052845), (29, 689795), (53, 377435), (95, 210569), (137, 146015), (145, 137959), (265, 75487), (551, 36305), (685, 29203), (1007, 19865), (1537, 13015), (2603, 7685), (2755, 7261), (3973, 5035)]