19991544

素因数分解:

$2^3\times 3^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{479}}^1$

素因数の和:572

約数の個数: 64

約数和(自身を含む): 52531200

約数和(自身を除く): 32539656

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 37, 47, 74, 94, 111, 141, 148, 188, 222, 282, 296, 376, 444, 479, 564, 888, 958, 1128, 1437, 1739, 1916, 2874, 3478, 3832, 5217, 5748, 6956, 10434, 11496, 13912, 17723, 20868, 22513, 35446, 41736, 45026, 53169, 67539, 70892, 90052, 106338, 135078, 141784, 180104, 212676, 270156, 425352, 540312, 832981, 1665962, 2498943, 3331924, 4997886, 6663848, 9995772, 19991544]

約数ペア:

[(1, 19991544), (2, 9995772), (3, 6663848), (4, 4997886), (6, 3331924), (8, 2498943), (12, 1665962), (24, 832981), (37, 540312), (47, 425352), (74, 270156), (94, 212676), (111, 180104), (141, 141784), (148, 135078), (188, 106338), (222, 90052), (282, 70892), (296, 67539), (376, 53169), (444, 45026), (479, 41736), (564, 35446), (888, 22513), (958, 20868), (1128, 17723), (1437, 13912), (1739, 11496), (1916, 10434), (2874, 6956), (3478, 5748), (3832, 5217)]