21913020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{79}}^1$

素因数の和:184

約数の個数: 144

約数和(自身を含む): 71285760

約数和(自身を除く): 49372740

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 23, 30, 36, 45, 46, 60, 67, 69, 79, 90, 92, 115, 134, 138, 158, 180, 201, 207, 230, 237, 268, 276, 316, 335, 345, 395, 402, 414, 460, 474, 603, 670, 690, 711, 790, 804, 828, 948, 1005, 1035, 1185, 1206, 1340, 1380, 1422, 1541, 1580, 1817, 2010, 2070, 2370, 2412, 2844, 3015, 3082, 3555, 3634, 4020, 4140, 4623, 4740, 5293, 5451, 6030, 6164, 7110, 7268, 7705, 9085, 9246, 10586, 10902, 12060, 13869, 14220, 15410, 15879, 16353, 18170, 18492, 21172, 21804, 23115, 26465, 27255, 27738, 30820, 31758, 32706, 36340, 46230, 47637, 52930, 54510, 55476, 63516, 65412, 69345, 79395, 81765, 92460, 95274, 105860, 109020, 121739, 138690, 158790, 163530, 190548, 238185, 243478, 277380, 317580, 327060, 365217, 476370, 486956, 608695, 730434, 952740, 1095651, 1217390, 1460868, 1826085, 2191302, 2434780, 3652170, 4382604, 5478255, 7304340, 10956510, 21913020]

約数ペア:

[(1, 21913020), (2, 10956510), (3, 7304340), (4, 5478255), (5, 4382604), (6, 3652170), (9, 2434780), (10, 2191302), (12, 1826085), (15, 1460868), (18, 1217390), (20, 1095651), (23, 952740), (30, 730434), (36, 608695), (45, 486956), (46, 476370), (60, 365217), (67, 327060), (69, 317580), (79, 277380), (90, 243478), (92, 238185), (115, 190548), (134, 163530), (138, 158790), (158, 138690), (180, 121739), (201, 109020), (207, 105860), (230, 95274), (237, 92460), (268, 81765), (276, 79395), (316, 69345), (335, 65412), (345, 63516), (395, 55476), (402, 54510), (414, 52930), (460, 47637), (474, 46230), (603, 36340), (670, 32706), (690, 31758), (711, 30820), (790, 27738), (804, 27255), (828, 26465), (948, 23115), (1005, 21804), (1035, 21172), (1185, 18492), (1206, 18170), (1340, 16353), (1380, 15879), (1422, 15410), (1541, 14220), (1580, 13869), (1817, 12060), (2010, 10902), (2070, 10586), (2370, 9246), (2412, 9085), (2844, 7705), (3015, 7268), (3082, 7110), (3555, 6164), (3634, 6030), (4020, 5451), (4140, 5293), (4623, 4740)]