81123875

素因数分解:

$5^3\times 7^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{139}}^1$

素因数の和:213

約数の個数: 64

約数和(自身を含む): 125798400

約数和(自身を除く): 44674525

約数列:

[1, 5, 7, 23, 25, 29, 35, 115, 125, 139, 145, 161, 175, 203, 575, 667, 695, 725, 805, 875, 973, 1015, 2875, 3197, 3335, 3475, 3625, 4025, 4031, 4669, 4865, 5075, 15985, 16675, 17375, 20125, 20155, 22379, 23345, 24325, 25375, 28217, 79925, 83375, 92713, 100775, 111895, 116725, 121625, 141085, 399625, 463565, 503875, 559475, 583625, 648991, 705425, 2317825, 2797375, 3244955, 3527125, 11589125, 16224775, 81123875]

約数ペア:

[(1, 81123875), (5, 16224775), (7, 11589125), (23, 3527125), (25, 3244955), (29, 2797375), (35, 2317825), (115, 705425), (125, 648991), (139, 583625), (145, 559475), (161, 503875), (175, 463565), (203, 399625), (575, 141085), (667, 121625), (695, 116725), (725, 111895), (805, 100775), (875, 92713), (973, 83375), (1015, 79925), (2875, 28217), (3197, 25375), (3335, 24325), (3475, 23345), (3625, 22379), (4025, 20155), (4031, 20125), (4669, 17375), (4865, 16675), (5075, 15985)]