26126840

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{89}}^1\times {\mathrm{179}}^1$

素因数の和:320

約数の個数: 64

約数和(自身を含む): 61236000

約数和(自身を除く): 35109160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 89, 164, 178, 179, 205, 328, 356, 358, 410, 445, 712, 716, 820, 890, 895, 1432, 1640, 1780, 1790, 3560, 3580, 3649, 7160, 7298, 7339, 14596, 14678, 15931, 18245, 29192, 29356, 31862, 36490, 36695, 58712, 63724, 72980, 73390, 79655, 127448, 145960, 146780, 159310, 293560, 318620, 637240, 653171, 1306342, 2612684, 3265855, 5225368, 6531710, 13063420, 26126840]

約数ペア:

[(1, 26126840), (2, 13063420), (4, 6531710), (5, 5225368), (8, 3265855), (10, 2612684), (20, 1306342), (40, 653171), (41, 637240), (82, 318620), (89, 293560), (164, 159310), (178, 146780), (179, 145960), (205, 127448), (328, 79655), (356, 73390), (358, 72980), (410, 63724), (445, 58712), (712, 36695), (716, 36490), (820, 31862), (890, 29356), (895, 29192), (1432, 18245), (1640, 15931), (1780, 14678), (1790, 14596), (3560, 7339), (3580, 7298), (3649, 7160)]