20369790

素因数分解:

$2^1\times 3^2\times 5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{149}}^1$

素因数の和:207

約数の個数: 144

約数和(自身を含む): 64022400

約数和(自身を除く): 43652610

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 30, 31, 35, 42, 45, 49, 62, 63, 70, 90, 93, 98, 105, 126, 147, 149, 155, 186, 210, 217, 245, 279, 294, 298, 310, 315, 434, 441, 447, 465, 490, 558, 630, 651, 735, 745, 882, 894, 930, 1043, 1085, 1302, 1341, 1395, 1470, 1490, 1519, 1953, 2086, 2170, 2205, 2235, 2682, 2790, 3038, 3129, 3255, 3906, 4410, 4470, 4557, 4619, 5215, 6258, 6510, 6705, 7301, 7595, 9114, 9238, 9387, 9765, 10430, 13410, 13671, 13857, 14602, 15190, 15645, 18774, 19530, 21903, 22785, 23095, 27342, 27714, 31290, 32333, 36505, 41571, 43806, 45570, 46190, 46935, 64666, 65709, 68355, 69285, 73010, 83142, 93870, 96999, 109515, 131418, 136710, 138570, 161665, 193998, 207855, 219030, 226331, 290997, 323330, 328545, 415710, 452662, 484995, 581994, 657090, 678993, 969990, 1131655, 1357986, 1454985, 2036979, 2263310, 2909970, 3394965, 4073958, 6789930, 10184895, 20369790]

約数ペア:

[(1, 20369790), (2, 10184895), (3, 6789930), (5, 4073958), (6, 3394965), (7, 2909970), (9, 2263310), (10, 2036979), (14, 1454985), (15, 1357986), (18, 1131655), (21, 969990), (30, 678993), (31, 657090), (35, 581994), (42, 484995), (45, 452662), (49, 415710), (62, 328545), (63, 323330), (70, 290997), (90, 226331), (93, 219030), (98, 207855), (105, 193998), (126, 161665), (147, 138570), (149, 136710), (155, 131418), (186, 109515), (210, 96999), (217, 93870), (245, 83142), (279, 73010), (294, 69285), (298, 68355), (310, 65709), (315, 64666), (434, 46935), (441, 46190), (447, 45570), (465, 43806), (490, 41571), (558, 36505), (630, 32333), (651, 31290), (735, 27714), (745, 27342), (882, 23095), (894, 22785), (930, 21903), (1043, 19530), (1085, 18774), (1302, 15645), (1341, 15190), (1395, 14602), (1470, 13857), (1490, 13671), (1519, 13410), (1953, 10430), (2086, 9765), (2170, 9387), (2205, 9238), (2235, 9114), (2682, 7595), (2790, 7301), (3038, 6705), (3129, 6510), (3255, 6258), (3906, 5215), (4410, 4619), (4470, 4557)]