39970840

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{139}}^1$

素因数の和:249

約数の個数: 128

約数和(自身を含む): 112896000

約数和(自身を除く): 72925160

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 52, 56, 65, 70, 79, 91, 104, 130, 139, 140, 158, 182, 260, 278, 280, 316, 364, 395, 455, 520, 553, 556, 632, 695, 728, 790, 910, 973, 1027, 1106, 1112, 1390, 1580, 1807, 1820, 1946, 2054, 2212, 2765, 2780, 3160, 3614, 3640, 3892, 4108, 4424, 4865, 5135, 5530, 5560, 7189, 7228, 7784, 8216, 9035, 9730, 10270, 10981, 11060, 12649, 14378, 14456, 18070, 19460, 20540, 21962, 22120, 25298, 28756, 35945, 36140, 38920, 41080, 43924, 50596, 54905, 57512, 63245, 71890, 72280, 76867, 87848, 101192, 109810, 126490, 142753, 143780, 153734, 219620, 252980, 285506, 287560, 307468, 384335, 439240, 505960, 571012, 614936, 713765, 768670, 999271, 1142024, 1427530, 1537340, 1998542, 2855060, 3074680, 3997084, 4996355, 5710120, 7994168, 9992710, 19985420, 39970840]

約数ペア:

[(1, 39970840), (2, 19985420), (4, 9992710), (5, 7994168), (7, 5710120), (8, 4996355), (10, 3997084), (13, 3074680), (14, 2855060), (20, 1998542), (26, 1537340), (28, 1427530), (35, 1142024), (40, 999271), (52, 768670), (56, 713765), (65, 614936), (70, 571012), (79, 505960), (91, 439240), (104, 384335), (130, 307468), (139, 287560), (140, 285506), (158, 252980), (182, 219620), (260, 153734), (278, 143780), (280, 142753), (316, 126490), (364, 109810), (395, 101192), (455, 87848), (520, 76867), (553, 72280), (556, 71890), (632, 63245), (695, 57512), (728, 54905), (790, 50596), (910, 43924), (973, 41080), (1027, 38920), (1106, 36140), (1112, 35945), (1390, 28756), (1580, 25298), (1807, 22120), (1820, 21962), (1946, 20540), (2054, 19460), (2212, 18070), (2765, 14456), (2780, 14378), (3160, 12649), (3614, 11060), (3640, 10981), (3892, 10270), (4108, 9730), (4424, 9035), (4865, 8216), (5135, 7784), (5530, 7228), (5560, 7189)]