28171557

素因数分解:

$3^4\times {\mathrm{29}}^1\times {\mathrm{67}}^1\times {\mathrm{179}}^1$

素因数の和:287

約数の個数: 40

約数和(自身を含む): 44431200

約数和(自身を除く): 16259643

約数列:

[1, 3, 9, 27, 29, 67, 81, 87, 179, 201, 261, 537, 603, 783, 1611, 1809, 1943, 2349, 4833, 5191, 5427, 5829, 11993, 14499, 15573, 17487, 35979, 46719, 52461, 107937, 140157, 157383, 323811, 347797, 420471, 971433, 1043391, 3130173, 9390519, 28171557]

約数ペア:

[(1, 28171557), (3, 9390519), (9, 3130173), (27, 1043391), (29, 971433), (67, 420471), (81, 347797), (87, 323811), (179, 157383), (201, 140157), (261, 107937), (537, 52461), (603, 46719), (783, 35979), (1611, 17487), (1809, 15573), (1943, 14499), (2349, 11993), (4833, 5829), (5191, 5427)]