20338425

素因数分解:

$3^3\times 5^2\times {\mathrm{29}}^1\times {\mathrm{1039}}^1$

素因数の和:1087

約数の個数: 48

約数和(自身を含む): 38688000

約数和(自身を除く): 18349575

約数列:

[1, 3, 5, 9, 15, 25, 27, 29, 45, 75, 87, 135, 145, 225, 261, 435, 675, 725, 783, 1039, 1305, 2175, 3117, 3915, 5195, 6525, 9351, 15585, 19575, 25975, 28053, 30131, 46755, 77925, 90393, 140265, 150655, 233775, 271179, 451965, 701325, 753275, 813537, 1355895, 2259825, 4067685, 6779475, 20338425]

約数ペア:

[(1, 20338425), (3, 6779475), (5, 4067685), (9, 2259825), (15, 1355895), (25, 813537), (27, 753275), (29, 701325), (45, 451965), (75, 271179), (87, 233775), (135, 150655), (145, 140265), (225, 90393), (261, 77925), (435, 46755), (675, 30131), (725, 28053), (783, 25975), (1039, 19575), (1305, 15585), (2175, 9351), (3117, 6525), (3915, 5195)]