990913840

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{93131}}^1$

素因数の和:93170

約数の個数: 80

約数和(自身を含む): 2771608320

約数和(自身を除く): 1780694480

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 19, 20, 28, 35, 38, 40, 56, 70, 76, 80, 95, 112, 133, 140, 152, 190, 266, 280, 304, 380, 532, 560, 665, 760, 1064, 1330, 1520, 2128, 2660, 5320, 10640, 93131, 186262, 372524, 465655, 651917, 745048, 931310, 1303834, 1490096, 1769489, 1862620, 2607668, 3259585, 3538978, 3725240, 5215336, 6519170, 7077956, 7450480, 8847445, 10430672, 12386423, 13038340, 14155912, 17694890, 24772846, 26076680, 28311824, 35389780, 49545692, 52153360, 61932115, 70779560, 99091384, 123864230, 141559120, 198182768, 247728460, 495456920, 990913840]

約数ペア:

[(1, 990913840), (2, 495456920), (4, 247728460), (5, 198182768), (7, 141559120), (8, 123864230), (10, 99091384), (14, 70779560), (16, 61932115), (19, 52153360), (20, 49545692), (28, 35389780), (35, 28311824), (38, 26076680), (40, 24772846), (56, 17694890), (70, 14155912), (76, 13038340), (80, 12386423), (95, 10430672), (112, 8847445), (133, 7450480), (140, 7077956), (152, 6519170), (190, 5215336), (266, 3725240), (280, 3538978), (304, 3259585), (380, 2607668), (532, 1862620), (560, 1769489), (665, 1490096), (760, 1303834), (1064, 931310), (1330, 745048), (1520, 651917), (2128, 465655), (2660, 372524), (5320, 186262), (10640, 93131)]