81744880

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{2393}}^1$

素因数の和:2474

約数の個数: 80

約数和(自身を含む): 220860864

約数和(自身を除く): 139115984

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 61, 70, 80, 112, 122, 140, 244, 280, 305, 427, 488, 560, 610, 854, 976, 1220, 1708, 2135, 2393, 2440, 3416, 4270, 4786, 4880, 6832, 8540, 9572, 11965, 16751, 17080, 19144, 23930, 33502, 34160, 38288, 47860, 67004, 83755, 95720, 134008, 145973, 167510, 191440, 268016, 291946, 335020, 583892, 670040, 729865, 1021811, 1167784, 1340080, 1459730, 2043622, 2335568, 2919460, 4087244, 5109055, 5838920, 8174488, 10218110, 11677840, 16348976, 20436220, 40872440, 81744880]

約数ペア:

[(1, 81744880), (2, 40872440), (4, 20436220), (5, 16348976), (7, 11677840), (8, 10218110), (10, 8174488), (14, 5838920), (16, 5109055), (20, 4087244), (28, 2919460), (35, 2335568), (40, 2043622), (56, 1459730), (61, 1340080), (70, 1167784), (80, 1021811), (112, 729865), (122, 670040), (140, 583892), (244, 335020), (280, 291946), (305, 268016), (427, 191440), (488, 167510), (560, 145973), (610, 134008), (854, 95720), (976, 83755), (1220, 67004), (1708, 47860), (2135, 38288), (2393, 34160), (2440, 33502), (3416, 23930), (4270, 19144), (4786, 17080), (4880, 16751), (6832, 11965), (8540, 9572)]