20015160

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{257}}^1$

素因数の和:341

約数の個数: 128

約数和(自身を含む): 66873600

約数和(自身を除く): 46858440

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 20, 22, 24, 30, 33, 40, 44, 55, 59, 60, 66, 88, 110, 118, 120, 132, 165, 177, 220, 236, 257, 264, 295, 330, 354, 440, 472, 514, 590, 649, 660, 708, 771, 885, 1028, 1180, 1285, 1298, 1320, 1416, 1542, 1770, 1947, 2056, 2360, 2570, 2596, 2827, 3084, 3245, 3540, 3855, 3894, 5140, 5192, 5654, 6168, 6490, 7080, 7710, 7788, 8481, 9735, 10280, 11308, 12980, 14135, 15163, 15420, 15576, 16962, 19470, 22616, 25960, 28270, 30326, 30840, 33924, 38940, 42405, 45489, 56540, 60652, 67848, 75815, 77880, 84810, 90978, 113080, 121304, 151630, 166793, 169620, 181956, 227445, 303260, 333586, 339240, 363912, 454890, 500379, 606520, 667172, 833965, 909780, 1000758, 1334344, 1667930, 1819560, 2001516, 2501895, 3335860, 4003032, 5003790, 6671720, 10007580, 20015160]

約数ペア:

[(1, 20015160), (2, 10007580), (3, 6671720), (4, 5003790), (5, 4003032), (6, 3335860), (8, 2501895), (10, 2001516), (11, 1819560), (12, 1667930), (15, 1334344), (20, 1000758), (22, 909780), (24, 833965), (30, 667172), (33, 606520), (40, 500379), (44, 454890), (55, 363912), (59, 339240), (60, 333586), (66, 303260), (88, 227445), (110, 181956), (118, 169620), (120, 166793), (132, 151630), (165, 121304), (177, 113080), (220, 90978), (236, 84810), (257, 77880), (264, 75815), (295, 67848), (330, 60652), (354, 56540), (440, 45489), (472, 42405), (514, 38940), (590, 33924), (649, 30840), (660, 30326), (708, 28270), (771, 25960), (885, 22616), (1028, 19470), (1180, 16962), (1285, 15576), (1298, 15420), (1320, 15163), (1416, 14135), (1542, 12980), (1770, 11308), (1947, 10280), (2056, 9735), (2360, 8481), (2570, 7788), (2596, 7710), (2827, 7080), (3084, 6490), (3245, 6168), (3540, 5654), (3855, 5192), (3894, 5140)]