21006636

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{83}}^1\times {\mathrm{131}}^1$

素因数の和:251

約数の個数: 96

約数和(自身を含む): 59609088

約数和(自身を除く): 38602452

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 23, 28, 42, 46, 69, 83, 84, 92, 131, 138, 161, 166, 249, 262, 276, 322, 332, 393, 483, 498, 524, 581, 644, 786, 917, 966, 996, 1162, 1572, 1743, 1834, 1909, 1932, 2324, 2751, 3013, 3486, 3668, 3818, 5502, 5727, 6026, 6972, 7636, 9039, 10873, 11004, 11454, 12052, 13363, 18078, 21091, 21746, 22908, 26726, 32619, 36156, 40089, 42182, 43492, 53452, 63273, 65238, 76111, 80178, 84364, 126546, 130476, 152222, 160356, 228333, 250079, 253092, 304444, 456666, 500158, 750237, 913332, 1000316, 1500474, 1750553, 3000948, 3501106, 5251659, 7002212, 10503318, 21006636]

約数ペア:

[(1, 21006636), (2, 10503318), (3, 7002212), (4, 5251659), (6, 3501106), (7, 3000948), (12, 1750553), (14, 1500474), (21, 1000316), (23, 913332), (28, 750237), (42, 500158), (46, 456666), (69, 304444), (83, 253092), (84, 250079), (92, 228333), (131, 160356), (138, 152222), (161, 130476), (166, 126546), (249, 84364), (262, 80178), (276, 76111), (322, 65238), (332, 63273), (393, 53452), (483, 43492), (498, 42182), (524, 40089), (581, 36156), (644, 32619), (786, 26726), (917, 22908), (966, 21746), (996, 21091), (1162, 18078), (1572, 13363), (1743, 12052), (1834, 11454), (1909, 11004), (1932, 10873), (2324, 9039), (2751, 7636), (3013, 6972), (3486, 6026), (3668, 5727), (3818, 5502)]