40282640

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{439}}^1$

素因数の和:520

約数の個数: 80

約数和(自身を含む): 99517440

約数和(自身を除く): 59234800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 37, 40, 62, 74, 80, 124, 148, 155, 185, 248, 296, 310, 370, 439, 496, 592, 620, 740, 878, 1147, 1240, 1480, 1756, 2195, 2294, 2480, 2960, 3512, 4390, 4588, 5735, 7024, 8780, 9176, 11470, 13609, 16243, 17560, 18352, 22940, 27218, 32486, 35120, 45880, 54436, 64972, 68045, 81215, 91760, 108872, 129944, 136090, 162430, 217744, 259888, 272180, 324860, 503533, 544360, 649720, 1007066, 1088720, 1299440, 2014132, 2517665, 4028264, 5035330, 8056528, 10070660, 20141320, 40282640]

約数ペア:

[(1, 40282640), (2, 20141320), (4, 10070660), (5, 8056528), (8, 5035330), (10, 4028264), (16, 2517665), (20, 2014132), (31, 1299440), (37, 1088720), (40, 1007066), (62, 649720), (74, 544360), (80, 503533), (124, 324860), (148, 272180), (155, 259888), (185, 217744), (248, 162430), (296, 136090), (310, 129944), (370, 108872), (439, 91760), (496, 81215), (592, 68045), (620, 64972), (740, 54436), (878, 45880), (1147, 35120), (1240, 32486), (1480, 27218), (1756, 22940), (2195, 18352), (2294, 17560), (2480, 16243), (2960, 13609), (3512, 11470), (4390, 9176), (4588, 8780), (5735, 7024)]