40290640

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{2039}}^1$

素因数の和:2084

約数の個数: 80

約数和(自身を含む): 106243200

約数和(自身を除く): 65952560

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 19, 20, 26, 38, 40, 52, 65, 76, 80, 95, 104, 130, 152, 190, 208, 247, 260, 304, 380, 494, 520, 760, 988, 1040, 1235, 1520, 1976, 2039, 2470, 3952, 4078, 4940, 8156, 9880, 10195, 16312, 19760, 20390, 26507, 32624, 38741, 40780, 53014, 77482, 81560, 106028, 132535, 154964, 163120, 193705, 212056, 265070, 309928, 387410, 424112, 503633, 530140, 619856, 774820, 1007266, 1060280, 1549640, 2014532, 2120560, 2518165, 3099280, 4029064, 5036330, 8058128, 10072660, 20145320, 40290640]

約数ペア:

[(1, 40290640), (2, 20145320), (4, 10072660), (5, 8058128), (8, 5036330), (10, 4029064), (13, 3099280), (16, 2518165), (19, 2120560), (20, 2014532), (26, 1549640), (38, 1060280), (40, 1007266), (52, 774820), (65, 619856), (76, 530140), (80, 503633), (95, 424112), (104, 387410), (130, 309928), (152, 265070), (190, 212056), (208, 193705), (247, 163120), (260, 154964), (304, 132535), (380, 106028), (494, 81560), (520, 77482), (760, 53014), (988, 40780), (1040, 38741), (1235, 32624), (1520, 26507), (1976, 20390), (2039, 19760), (2470, 16312), (3952, 10195), (4078, 9880), (4940, 8156)]