81520440

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{449}}^1$

素因数の和:569

約数の個数: 128

約数和(自身を含む): 262440000

約数和(自身を除く): 180919560

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 17, 20, 24, 30, 34, 40, 51, 60, 68, 85, 89, 102, 120, 136, 170, 178, 204, 255, 267, 340, 356, 408, 445, 449, 510, 534, 680, 712, 890, 898, 1020, 1068, 1335, 1347, 1513, 1780, 1796, 2040, 2136, 2245, 2670, 2694, 3026, 3560, 3592, 4490, 4539, 5340, 5388, 6052, 6735, 7565, 7633, 8980, 9078, 10680, 10776, 12104, 13470, 15130, 15266, 17960, 18156, 22695, 22899, 26940, 30260, 30532, 36312, 38165, 39961, 45390, 45798, 53880, 60520, 61064, 76330, 79922, 90780, 91596, 114495, 119883, 152660, 159844, 181560, 183192, 199805, 228990, 239766, 305320, 319688, 399610, 457980, 479532, 599415, 679337, 799220, 915960, 959064, 1198830, 1358674, 1598440, 2038011, 2397660, 2717348, 3396685, 4076022, 4795320, 5434696, 6793370, 8152044, 10190055, 13586740, 16304088, 20380110, 27173480, 40760220, 81520440]

約数ペア:

[(1, 81520440), (2, 40760220), (3, 27173480), (4, 20380110), (5, 16304088), (6, 13586740), (8, 10190055), (10, 8152044), (12, 6793370), (15, 5434696), (17, 4795320), (20, 4076022), (24, 3396685), (30, 2717348), (34, 2397660), (40, 2038011), (51, 1598440), (60, 1358674), (68, 1198830), (85, 959064), (89, 915960), (102, 799220), (120, 679337), (136, 599415), (170, 479532), (178, 457980), (204, 399610), (255, 319688), (267, 305320), (340, 239766), (356, 228990), (408, 199805), (445, 183192), (449, 181560), (510, 159844), (534, 152660), (680, 119883), (712, 114495), (890, 91596), (898, 90780), (1020, 79922), (1068, 76330), (1335, 61064), (1347, 60520), (1513, 53880), (1780, 45798), (1796, 45390), (2040, 39961), (2136, 38165), (2245, 36312), (2670, 30532), (2694, 30260), (3026, 26940), (3560, 22899), (3592, 22695), (4490, 18156), (4539, 17960), (5340, 15266), (5388, 15130), (6052, 13470), (6735, 12104), (7565, 10776), (7633, 10680), (8980, 9078)]