42721785

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{1723}}^1$

素因数の和:1782

約数の個数: 48

約数和(自身を含む): 80683200

約数和(自身を除く): 37961415

約数列:

[1, 3, 5, 9, 15, 19, 29, 45, 57, 87, 95, 145, 171, 261, 285, 435, 551, 855, 1305, 1653, 1723, 2755, 4959, 5169, 8265, 8615, 15507, 24795, 25845, 32737, 49967, 77535, 98211, 149901, 163685, 249835, 294633, 449703, 491055, 749505, 949373, 1473165, 2248515, 2848119, 4746865, 8544357, 14240595, 42721785]

約数ペア:

[(1, 42721785), (3, 14240595), (5, 8544357), (9, 4746865), (15, 2848119), (19, 2248515), (29, 1473165), (45, 949373), (57, 749505), (87, 491055), (95, 449703), (145, 294633), (171, 249835), (261, 163685), (285, 149901), (435, 98211), (551, 77535), (855, 49967), (1305, 32737), (1653, 25845), (1723, 24795), (2755, 15507), (4959, 8615), (5169, 8265)]