18865784

素因数分解:

$2^3\times 7^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{149}}^1$

素因数の和:205

約数の個数: 96

約数和(自身を含む): 46170000

約数和(自身を除く): 27304216

約数列:

[1, 2, 4, 7, 8, 14, 17, 19, 28, 34, 38, 49, 56, 68, 76, 98, 119, 133, 136, 149, 152, 196, 238, 266, 298, 323, 392, 476, 532, 596, 646, 833, 931, 952, 1043, 1064, 1192, 1292, 1666, 1862, 2086, 2261, 2533, 2584, 2831, 3332, 3724, 4172, 4522, 5066, 5662, 6664, 7301, 7448, 8344, 9044, 10132, 11324, 14602, 15827, 17731, 18088, 19817, 20264, 22648, 29204, 31654, 35462, 39634, 48127, 58408, 63308, 70924, 79268, 96254, 124117, 126616, 138719, 141848, 158536, 192508, 248234, 277438, 336889, 385016, 496468, 554876, 673778, 992936, 1109752, 1347556, 2358223, 2695112, 4716446, 9432892, 18865784]

約数ペア:

[(1, 18865784), (2, 9432892), (4, 4716446), (7, 2695112), (8, 2358223), (14, 1347556), (17, 1109752), (19, 992936), (28, 673778), (34, 554876), (38, 496468), (49, 385016), (56, 336889), (68, 277438), (76, 248234), (98, 192508), (119, 158536), (133, 141848), (136, 138719), (149, 126616), (152, 124117), (196, 96254), (238, 79268), (266, 70924), (298, 63308), (323, 58408), (392, 48127), (476, 39634), (532, 35462), (596, 31654), (646, 29204), (833, 22648), (931, 20264), (952, 19817), (1043, 18088), (1064, 17731), (1192, 15827), (1292, 14602), (1666, 11324), (1862, 10132), (2086, 9044), (2261, 8344), (2533, 7448), (2584, 7301), (2831, 6664), (3332, 5662), (3724, 5066), (4172, 4522)]