18875025

素因数分解:

$3^5\times 5^2\times {\mathrm{13}}^1\times {\mathrm{239}}^1$

素因数の和:277

約数の個数: 72

約数和(自身を含む): 37914240

約数和(自身を除く): 19039215

約数列:

[1, 3, 5, 9, 13, 15, 25, 27, 39, 45, 65, 75, 81, 117, 135, 195, 225, 239, 243, 325, 351, 405, 585, 675, 717, 975, 1053, 1195, 1215, 1755, 2025, 2151, 2925, 3107, 3159, 3585, 5265, 5975, 6075, 6453, 8775, 9321, 10755, 15535, 15795, 17925, 19359, 26325, 27963, 32265, 46605, 53775, 58077, 77675, 78975, 83889, 96795, 139815, 161325, 233025, 251667, 290385, 419445, 483975, 699075, 755001, 1258335, 1451925, 2097225, 3775005, 6291675, 18875025]

約数ペア:

[(1, 18875025), (3, 6291675), (5, 3775005), (9, 2097225), (13, 1451925), (15, 1258335), (25, 755001), (27, 699075), (39, 483975), (45, 419445), (65, 290385), (75, 251667), (81, 233025), (117, 161325), (135, 139815), (195, 96795), (225, 83889), (239, 78975), (243, 77675), (325, 58077), (351, 53775), (405, 46605), (585, 32265), (675, 27963), (717, 26325), (975, 19359), (1053, 17925), (1195, 15795), (1215, 15535), (1755, 10755), (2025, 9321), (2151, 8775), (2925, 6453), (3107, 6075), (3159, 5975), (3585, 5265)]