21281976

素因数分解:

$2^3\times 3^2\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{331}}^1$

素因数の和:409

約数の個数: 96

約数和(自身を含む): 62150400

約数和(自身を除く): 40868424

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 19, 24, 36, 38, 47, 57, 72, 76, 94, 114, 141, 152, 171, 188, 228, 282, 331, 342, 376, 423, 456, 564, 662, 684, 846, 893, 993, 1128, 1324, 1368, 1692, 1786, 1986, 2648, 2679, 2979, 3384, 3572, 3972, 5358, 5958, 6289, 7144, 7944, 8037, 10716, 11916, 12578, 15557, 16074, 18867, 21432, 23832, 25156, 31114, 32148, 37734, 46671, 50312, 56601, 62228, 64296, 75468, 93342, 113202, 124456, 140013, 150936, 186684, 226404, 280026, 295583, 373368, 452808, 560052, 591166, 886749, 1120104, 1182332, 1773498, 2364664, 2660247, 3546996, 5320494, 7093992, 10640988, 21281976]

約数ペア:

[(1, 21281976), (2, 10640988), (3, 7093992), (4, 5320494), (6, 3546996), (8, 2660247), (9, 2364664), (12, 1773498), (18, 1182332), (19, 1120104), (24, 886749), (36, 591166), (38, 560052), (47, 452808), (57, 373368), (72, 295583), (76, 280026), (94, 226404), (114, 186684), (141, 150936), (152, 140013), (171, 124456), (188, 113202), (228, 93342), (282, 75468), (331, 64296), (342, 62228), (376, 56601), (423, 50312), (456, 46671), (564, 37734), (662, 32148), (684, 31114), (846, 25156), (893, 23832), (993, 21432), (1128, 18867), (1324, 16074), (1368, 15557), (1692, 12578), (1786, 11916), (1986, 10716), (2648, 8037), (2679, 7944), (2979, 7144), (3384, 6289), (3572, 5958), (3972, 5358)]