26138680

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{163}}^1\times {\mathrm{211}}^1$

素因数の和:404

約数の個数: 64

約数和(自身を含む): 62582400

約数和(自身を除く): 36443720

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 163, 190, 211, 326, 380, 422, 652, 760, 815, 844, 1055, 1304, 1630, 1688, 2110, 3097, 3260, 4009, 4220, 6194, 6520, 8018, 8440, 12388, 15485, 16036, 20045, 24776, 30970, 32072, 34393, 40090, 61940, 68786, 80180, 123880, 137572, 160360, 171965, 275144, 343930, 653467, 687860, 1306934, 1375720, 2613868, 3267335, 5227736, 6534670, 13069340, 26138680]

約数ペア:

[(1, 26138680), (2, 13069340), (4, 6534670), (5, 5227736), (8, 3267335), (10, 2613868), (19, 1375720), (20, 1306934), (38, 687860), (40, 653467), (76, 343930), (95, 275144), (152, 171965), (163, 160360), (190, 137572), (211, 123880), (326, 80180), (380, 68786), (422, 61940), (652, 40090), (760, 34393), (815, 32072), (844, 30970), (1055, 24776), (1304, 20045), (1630, 16036), (1688, 15485), (2110, 12388), (3097, 8440), (3260, 8018), (4009, 6520), (4220, 6194)]