21223608

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{109}}^1$

素因数の和:205

約数の個数: 128

約数和(自身を含む): 65472000

約数和(自身を除く): 44248392

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 19, 21, 24, 28, 38, 42, 56, 57, 61, 76, 84, 109, 114, 122, 133, 152, 168, 183, 218, 228, 244, 266, 327, 366, 399, 427, 436, 456, 488, 532, 654, 732, 763, 798, 854, 872, 1064, 1159, 1281, 1308, 1464, 1526, 1596, 1708, 2071, 2289, 2318, 2562, 2616, 3052, 3192, 3416, 3477, 4142, 4578, 4636, 5124, 6104, 6213, 6649, 6954, 8113, 8284, 9156, 9272, 10248, 12426, 13298, 13908, 14497, 16226, 16568, 18312, 19947, 24339, 24852, 26596, 27816, 28994, 32452, 39894, 43491, 46543, 48678, 49704, 53192, 57988, 64904, 79788, 86982, 93086, 97356, 115976, 126331, 139629, 159576, 173964, 186172, 194712, 252662, 279258, 347928, 372344, 378993, 505324, 558516, 757986, 884317, 1010648, 1117032, 1515972, 1768634, 2652951, 3031944, 3537268, 5305902, 7074536, 10611804, 21223608]

約数ペア:

[(1, 21223608), (2, 10611804), (3, 7074536), (4, 5305902), (6, 3537268), (7, 3031944), (8, 2652951), (12, 1768634), (14, 1515972), (19, 1117032), (21, 1010648), (24, 884317), (28, 757986), (38, 558516), (42, 505324), (56, 378993), (57, 372344), (61, 347928), (76, 279258), (84, 252662), (109, 194712), (114, 186172), (122, 173964), (133, 159576), (152, 139629), (168, 126331), (183, 115976), (218, 97356), (228, 93086), (244, 86982), (266, 79788), (327, 64904), (366, 57988), (399, 53192), (427, 49704), (436, 48678), (456, 46543), (488, 43491), (532, 39894), (654, 32452), (732, 28994), (763, 27816), (798, 26596), (854, 24852), (872, 24339), (1064, 19947), (1159, 18312), (1281, 16568), (1308, 16226), (1464, 14497), (1526, 13908), (1596, 13298), (1708, 12426), (2071, 10248), (2289, 9272), (2318, 9156), (2562, 8284), (2616, 8113), (3052, 6954), (3192, 6649), (3416, 6213), (3477, 6104), (4142, 5124), (4578, 4636)]