71981840

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{173}}^1\times {\mathrm{743}}^1$

素因数の和:936

約数の個数: 80

約数和(自身を含む): 192630528

約数和(自身を除く): 120648688

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 173, 280, 346, 560, 692, 743, 865, 1211, 1384, 1486, 1730, 2422, 2768, 2972, 3460, 3715, 4844, 5201, 5944, 6055, 6920, 7430, 9688, 10402, 11888, 12110, 13840, 14860, 19376, 20804, 24220, 26005, 29720, 41608, 48440, 52010, 59440, 83216, 96880, 104020, 128539, 208040, 257078, 416080, 514156, 642695, 899773, 1028312, 1285390, 1799546, 2056624, 2570780, 3599092, 4498865, 5141560, 7198184, 8997730, 10283120, 14396368, 17995460, 35990920, 71981840]

約数ペア:

[(1, 71981840), (2, 35990920), (4, 17995460), (5, 14396368), (7, 10283120), (8, 8997730), (10, 7198184), (14, 5141560), (16, 4498865), (20, 3599092), (28, 2570780), (35, 2056624), (40, 1799546), (56, 1285390), (70, 1028312), (80, 899773), (112, 642695), (140, 514156), (173, 416080), (280, 257078), (346, 208040), (560, 128539), (692, 104020), (743, 96880), (865, 83216), (1211, 59440), (1384, 52010), (1486, 48440), (1730, 41608), (2422, 29720), (2768, 26005), (2972, 24220), (3460, 20804), (3715, 19376), (4844, 14860), (5201, 13840), (5944, 12110), (6055, 11888), (6920, 10402), (7430, 9688)]