80774720

素因数分解:

$2^6\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19417}}^1$

素因数の和:19447

約数の個数: 56

約数和(自身を含む): 207151224

約数和(自身を除く): 126376504

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 130, 160, 208, 260, 320, 416, 520, 832, 1040, 2080, 4160, 19417, 38834, 77668, 97085, 155336, 194170, 252421, 310672, 388340, 504842, 621344, 776680, 1009684, 1242688, 1262105, 1553360, 2019368, 2524210, 3106720, 4038736, 5048420, 6213440, 8077472, 10096840, 16154944, 20193680, 40387360, 80774720]

約数ペア:

[(1, 80774720), (2, 40387360), (4, 20193680), (5, 16154944), (8, 10096840), (10, 8077472), (13, 6213440), (16, 5048420), (20, 4038736), (26, 3106720), (32, 2524210), (40, 2019368), (52, 1553360), (64, 1262105), (65, 1242688), (80, 1009684), (104, 776680), (130, 621344), (160, 504842), (208, 388340), (260, 310672), (320, 252421), (416, 194170), (520, 155336), (832, 97085), (1040, 77668), (2080, 38834), (4160, 19417)]