21039648

素因数分解:

$2^5\times 3^1\times 7^1\times {\mathrm{131}}^1\times {\mathrm{239}}^1$

素因数の和:390

約数の個数: 96

約数和(自身を含む): 63866880

約数和(自身を除く): 42827232

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 21, 24, 28, 32, 42, 48, 56, 84, 96, 112, 131, 168, 224, 239, 262, 336, 393, 478, 524, 672, 717, 786, 917, 956, 1048, 1434, 1572, 1673, 1834, 1912, 2096, 2751, 2868, 3144, 3346, 3668, 3824, 4192, 5019, 5502, 5736, 6288, 6692, 7336, 7648, 10038, 11004, 11472, 12576, 13384, 14672, 20076, 22008, 22944, 26768, 29344, 31309, 40152, 44016, 53536, 62618, 80304, 88032, 93927, 125236, 160608, 187854, 219163, 250472, 375708, 438326, 500944, 657489, 751416, 876652, 1001888, 1314978, 1502832, 1753304, 2629956, 3005664, 3506608, 5259912, 7013216, 10519824, 21039648]

約数ペア:

[(1, 21039648), (2, 10519824), (3, 7013216), (4, 5259912), (6, 3506608), (7, 3005664), (8, 2629956), (12, 1753304), (14, 1502832), (16, 1314978), (21, 1001888), (24, 876652), (28, 751416), (32, 657489), (42, 500944), (48, 438326), (56, 375708), (84, 250472), (96, 219163), (112, 187854), (131, 160608), (168, 125236), (224, 93927), (239, 88032), (262, 80304), (336, 62618), (393, 53536), (478, 44016), (524, 40152), (672, 31309), (717, 29344), (786, 26768), (917, 22944), (956, 22008), (1048, 20076), (1434, 14672), (1572, 13384), (1673, 12576), (1834, 11472), (1912, 11004), (2096, 10038), (2751, 7648), (2868, 7336), (3144, 6692), (3346, 6288), (3668, 5736), (3824, 5502), (4192, 5019)]