398190520

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{787}}^1$

素因数の和:957

約数の個数: 128

約数和(自身を含む): 1112025600

約数和(自身を除く): 713835080

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 52, 56, 65, 70, 91, 104, 130, 139, 140, 182, 260, 278, 280, 364, 455, 520, 556, 695, 728, 787, 910, 973, 1112, 1390, 1574, 1807, 1820, 1946, 2780, 3148, 3614, 3640, 3892, 3935, 4865, 5509, 5560, 6296, 7228, 7784, 7870, 9035, 9730, 10231, 11018, 12649, 14456, 15740, 18070, 19460, 20462, 22036, 25298, 27545, 31480, 36140, 38920, 40924, 44072, 50596, 51155, 55090, 63245, 71617, 72280, 81848, 101192, 102310, 109393, 110180, 126490, 143234, 204620, 218786, 220360, 252980, 286468, 358085, 409240, 437572, 505960, 546965, 572936, 716170, 765751, 875144, 1093930, 1422109, 1432340, 1531502, 2187860, 2844218, 2864680, 3063004, 3828755, 4375720, 5688436, 6126008, 7110545, 7657510, 9954763, 11376872, 14221090, 15315020, 19909526, 28442180, 30630040, 39819052, 49773815, 56884360, 79638104, 99547630, 199095260, 398190520]

約数ペア:

[(1, 398190520), (2, 199095260), (4, 99547630), (5, 79638104), (7, 56884360), (8, 49773815), (10, 39819052), (13, 30630040), (14, 28442180), (20, 19909526), (26, 15315020), (28, 14221090), (35, 11376872), (40, 9954763), (52, 7657510), (56, 7110545), (65, 6126008), (70, 5688436), (91, 4375720), (104, 3828755), (130, 3063004), (139, 2864680), (140, 2844218), (182, 2187860), (260, 1531502), (278, 1432340), (280, 1422109), (364, 1093930), (455, 875144), (520, 765751), (556, 716170), (695, 572936), (728, 546965), (787, 505960), (910, 437572), (973, 409240), (1112, 358085), (1390, 286468), (1574, 252980), (1807, 220360), (1820, 218786), (1946, 204620), (2780, 143234), (3148, 126490), (3614, 110180), (3640, 109393), (3892, 102310), (3935, 101192), (4865, 81848), (5509, 72280), (5560, 71617), (6296, 63245), (7228, 55090), (7784, 51155), (7870, 50596), (9035, 44072), (9730, 40924), (10231, 38920), (11018, 36140), (12649, 31480), (14456, 27545), (15740, 25298), (18070, 22036), (19460, 20462)]