18231525

素因数分解:

$3^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{271}}^1$

素因数の和:323

約数の個数: 72

約数和(自身を含む): 36830976

約数和(自身を除く): 18599451

約数列:

[1, 3, 5, 9, 13, 15, 23, 25, 39, 45, 65, 69, 75, 115, 117, 195, 207, 225, 271, 299, 325, 345, 575, 585, 813, 897, 975, 1035, 1355, 1495, 1725, 2439, 2691, 2925, 3523, 4065, 4485, 5175, 6233, 6775, 7475, 10569, 12195, 13455, 17615, 18699, 20325, 22425, 31165, 31707, 52845, 56097, 60975, 67275, 81029, 88075, 93495, 155825, 158535, 243087, 264225, 280485, 405145, 467475, 729261, 792675, 1215435, 1402425, 2025725, 3646305, 6077175, 18231525]

約数ペア:

[(1, 18231525), (3, 6077175), (5, 3646305), (9, 2025725), (13, 1402425), (15, 1215435), (23, 792675), (25, 729261), (39, 467475), (45, 405145), (65, 280485), (69, 264225), (75, 243087), (115, 158535), (117, 155825), (195, 93495), (207, 88075), (225, 81029), (271, 67275), (299, 60975), (325, 56097), (345, 52845), (575, 31707), (585, 31165), (813, 22425), (897, 20325), (975, 18699), (1035, 17615), (1355, 13455), (1495, 12195), (1725, 10569), (2439, 7475), (2691, 6775), (2925, 6233), (3523, 5175), (4065, 4485)]