215671540

素因数分解:

$2^2\times 5^1\times 7^3\times {\mathrm{149}}^1\times {\mathrm{211}}^1$

素因数の和:390

約数の個数: 96

約数和(自身を含む): 534240000

約数和(自身を除く): 318568460

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 149, 196, 211, 245, 298, 343, 422, 490, 596, 686, 745, 844, 980, 1043, 1055, 1372, 1477, 1490, 1715, 2086, 2110, 2954, 2980, 3430, 4172, 4220, 5215, 5908, 6860, 7301, 7385, 10339, 10430, 14602, 14770, 20678, 20860, 29204, 29540, 31439, 36505, 41356, 51107, 51695, 62878, 72373, 73010, 102214, 103390, 125756, 144746, 146020, 157195, 204428, 206780, 220073, 255535, 289492, 314390, 361865, 440146, 511070, 628780, 723730, 880292, 1022140, 1100365, 1447460, 1540511, 2200730, 3081022, 4401460, 6162044, 7702555, 10783577, 15405110, 21567154, 30810220, 43134308, 53917885, 107835770, 215671540]

約数ペア:

[(1, 215671540), (2, 107835770), (4, 53917885), (5, 43134308), (7, 30810220), (10, 21567154), (14, 15405110), (20, 10783577), (28, 7702555), (35, 6162044), (49, 4401460), (70, 3081022), (98, 2200730), (140, 1540511), (149, 1447460), (196, 1100365), (211, 1022140), (245, 880292), (298, 723730), (343, 628780), (422, 511070), (490, 440146), (596, 361865), (686, 314390), (745, 289492), (844, 255535), (980, 220073), (1043, 206780), (1055, 204428), (1372, 157195), (1477, 146020), (1490, 144746), (1715, 125756), (2086, 103390), (2110, 102214), (2954, 73010), (2980, 72373), (3430, 62878), (4172, 51695), (4220, 51107), (5215, 41356), (5908, 36505), (6860, 31439), (7301, 29540), (7385, 29204), (10339, 20860), (10430, 20678), (14602, 14770)]