81009225

素因数分解:

$3^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{461}}^1$

素因数の和:559

約数の個数: 72

約数和(自身を含む): 160864704

約数和(自身を除く): 79855479

約数列:

[1, 3, 5, 9, 11, 15, 25, 33, 45, 55, 71, 75, 99, 165, 213, 225, 275, 355, 461, 495, 639, 781, 825, 1065, 1383, 1775, 2305, 2343, 2475, 3195, 3905, 4149, 5071, 5325, 6915, 7029, 11525, 11715, 15213, 15975, 19525, 20745, 25355, 32731, 34575, 35145, 45639, 58575, 76065, 98193, 103725, 126775, 163655, 175725, 228195, 294579, 360041, 380325, 490965, 818275, 1080123, 1140975, 1472895, 1800205, 2454825, 3240369, 5400615, 7364475, 9001025, 16201845, 27003075, 81009225]

約数ペア:

[(1, 81009225), (3, 27003075), (5, 16201845), (9, 9001025), (11, 7364475), (15, 5400615), (25, 3240369), (33, 2454825), (45, 1800205), (55, 1472895), (71, 1140975), (75, 1080123), (99, 818275), (165, 490965), (213, 380325), (225, 360041), (275, 294579), (355, 228195), (461, 175725), (495, 163655), (639, 126775), (781, 103725), (825, 98193), (1065, 76065), (1383, 58575), (1775, 45639), (2305, 35145), (2343, 34575), (2475, 32731), (3195, 25355), (3905, 20745), (4149, 19525), (5071, 15975), (5325, 15213), (6915, 11715), (7029, 11525)]