78658720

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{79}}^1\times {\mathrm{127}}^1$

素因数の和:235

約数の個数: 144

約数和(自身を含む): 220631040

約数和(自身を除く): 141972320

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 70, 79, 80, 98, 112, 127, 140, 158, 160, 196, 224, 245, 254, 280, 316, 392, 395, 490, 508, 553, 560, 632, 635, 784, 790, 889, 980, 1016, 1106, 1120, 1264, 1270, 1568, 1580, 1778, 1960, 2032, 2212, 2528, 2540, 2765, 3160, 3556, 3871, 3920, 4064, 4424, 4445, 5080, 5530, 6223, 6320, 7112, 7742, 7840, 8848, 8890, 10033, 10160, 11060, 12446, 12640, 14224, 15484, 17696, 17780, 19355, 20066, 20320, 22120, 24892, 28448, 30968, 31115, 35560, 38710, 40132, 44240, 49784, 50165, 61936, 62230, 70231, 71120, 77420, 80264, 88480, 99568, 100330, 123872, 124460, 140462, 142240, 154840, 160528, 199136, 200660, 248920, 280924, 309680, 321056, 351155, 401320, 491617, 497840, 561848, 619360, 702310, 802640, 983234, 995680, 1123696, 1404620, 1605280, 1966468, 2247392, 2458085, 2809240, 3932936, 4916170, 5618480, 7865872, 9832340, 11236960, 15731744, 19664680, 39329360, 78658720]

約数ペア:

[(1, 78658720), (2, 39329360), (4, 19664680), (5, 15731744), (7, 11236960), (8, 9832340), (10, 7865872), (14, 5618480), (16, 4916170), (20, 3932936), (28, 2809240), (32, 2458085), (35, 2247392), (40, 1966468), (49, 1605280), (56, 1404620), (70, 1123696), (79, 995680), (80, 983234), (98, 802640), (112, 702310), (127, 619360), (140, 561848), (158, 497840), (160, 491617), (196, 401320), (224, 351155), (245, 321056), (254, 309680), (280, 280924), (316, 248920), (392, 200660), (395, 199136), (490, 160528), (508, 154840), (553, 142240), (560, 140462), (632, 124460), (635, 123872), (784, 100330), (790, 99568), (889, 88480), (980, 80264), (1016, 77420), (1106, 71120), (1120, 70231), (1264, 62230), (1270, 61936), (1568, 50165), (1580, 49784), (1778, 44240), (1960, 40132), (2032, 38710), (2212, 35560), (2528, 31115), (2540, 30968), (2765, 28448), (3160, 24892), (3556, 22120), (3871, 20320), (3920, 20066), (4064, 19355), (4424, 17780), (4445, 17696), (5080, 15484), (5530, 14224), (6223, 12640), (6320, 12446), (7112, 11060), (7742, 10160), (7840, 10033), (8848, 8890)]