21729350

素因数分解:

$2^1\times 5^2\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{257}}^1$

素因数の和:377

約数の個数: 48

約数和(自身を含む): 43189200

約数和(自身を除く): 21459850

約数列:

[1, 2, 5, 10, 19, 25, 38, 50, 89, 95, 178, 190, 257, 445, 475, 514, 890, 950, 1285, 1691, 2225, 2570, 3382, 4450, 4883, 6425, 8455, 9766, 12850, 16910, 22873, 24415, 42275, 45746, 48830, 84550, 114365, 122075, 228730, 244150, 434587, 571825, 869174, 1143650, 2172935, 4345870, 10864675, 21729350]

約数ペア:

[(1, 21729350), (2, 10864675), (5, 4345870), (10, 2172935), (19, 1143650), (25, 869174), (38, 571825), (50, 434587), (89, 244150), (95, 228730), (178, 122075), (190, 114365), (257, 84550), (445, 48830), (475, 45746), (514, 42275), (890, 24415), (950, 22873), (1285, 16910), (1691, 12850), (2225, 9766), (2570, 8455), (3382, 6425), (4450, 4883)]