81432240

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{311}}^1\times {\mathrm{1091}}^1$

素因数の和:1418

約数の個数: 80

約数和(自身を含む): 253483776

約数和(自身を除く): 172051536

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 311, 622, 933, 1091, 1244, 1555, 1866, 2182, 2488, 3110, 3273, 3732, 4364, 4665, 4976, 5455, 6220, 6546, 7464, 8728, 9330, 10910, 12440, 13092, 14928, 16365, 17456, 18660, 21820, 24880, 26184, 32730, 37320, 43640, 52368, 65460, 74640, 87280, 130920, 261840, 339301, 678602, 1017903, 1357204, 1696505, 2035806, 2714408, 3393010, 4071612, 5089515, 5428816, 6786020, 8143224, 10179030, 13572040, 16286448, 20358060, 27144080, 40716120, 81432240]

約数ペア:

[(1, 81432240), (2, 40716120), (3, 27144080), (4, 20358060), (5, 16286448), (6, 13572040), (8, 10179030), (10, 8143224), (12, 6786020), (15, 5428816), (16, 5089515), (20, 4071612), (24, 3393010), (30, 2714408), (40, 2035806), (48, 1696505), (60, 1357204), (80, 1017903), (120, 678602), (240, 339301), (311, 261840), (622, 130920), (933, 87280), (1091, 74640), (1244, 65460), (1555, 52368), (1866, 43640), (2182, 37320), (2488, 32730), (3110, 26184), (3273, 24880), (3732, 21820), (4364, 18660), (4665, 17456), (4976, 16365), (5455, 14928), (6220, 13092), (6546, 12440), (7464, 10910), (8728, 9330)]