71328520

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1$

素因数の和:167

約数の個数: 128

約数和(自身を含む): 179988480

約数和(自身を除く): 108659960

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 31, 40, 41, 46, 61, 62, 82, 92, 115, 122, 124, 155, 164, 184, 205, 230, 244, 248, 305, 310, 328, 410, 460, 488, 610, 620, 713, 820, 920, 943, 1220, 1240, 1271, 1403, 1426, 1640, 1886, 1891, 2440, 2501, 2542, 2806, 2852, 3565, 3772, 3782, 4715, 5002, 5084, 5612, 5704, 6355, 7015, 7130, 7544, 7564, 9430, 9455, 10004, 10168, 11224, 12505, 12710, 14030, 14260, 15128, 18860, 18910, 20008, 25010, 25420, 28060, 28520, 29233, 37720, 37820, 43493, 50020, 50840, 56120, 57523, 58466, 75640, 77531, 86986, 100040, 115046, 116932, 146165, 155062, 173972, 217465, 230092, 233864, 287615, 292330, 310124, 347944, 387655, 434930, 460184, 575230, 584660, 620248, 775310, 869860, 1150460, 1169320, 1550620, 1739720, 1783213, 2300920, 3101240, 3566426, 7132852, 8916065, 14265704, 17832130, 35664260, 71328520]

約数ペア:

[(1, 71328520), (2, 35664260), (4, 17832130), (5, 14265704), (8, 8916065), (10, 7132852), (20, 3566426), (23, 3101240), (31, 2300920), (40, 1783213), (41, 1739720), (46, 1550620), (61, 1169320), (62, 1150460), (82, 869860), (92, 775310), (115, 620248), (122, 584660), (124, 575230), (155, 460184), (164, 434930), (184, 387655), (205, 347944), (230, 310124), (244, 292330), (248, 287615), (305, 233864), (310, 230092), (328, 217465), (410, 173972), (460, 155062), (488, 146165), (610, 116932), (620, 115046), (713, 100040), (820, 86986), (920, 77531), (943, 75640), (1220, 58466), (1240, 57523), (1271, 56120), (1403, 50840), (1426, 50020), (1640, 43493), (1886, 37820), (1891, 37720), (2440, 29233), (2501, 28520), (2542, 28060), (2806, 25420), (2852, 25010), (3565, 20008), (3772, 18910), (3782, 18860), (4715, 15128), (5002, 14260), (5084, 14030), (5612, 12710), (5704, 12505), (6355, 11224), (7015, 10168), (7130, 10004), (7544, 9455), (7564, 9430)]