25143820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{43}}^1\times {\mathrm{173}}^1$

素因数の和:251

約数の個数: 72

約数和(自身を含む): 58844016

約数和(自身を除く): 33700196

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 43, 52, 65, 86, 130, 169, 172, 173, 215, 260, 338, 346, 430, 559, 676, 692, 845, 860, 865, 1118, 1690, 1730, 2236, 2249, 2795, 3380, 3460, 4498, 5590, 7267, 7439, 8996, 11180, 11245, 14534, 14878, 22490, 29068, 29237, 29756, 36335, 37195, 44980, 58474, 72670, 74390, 96707, 116948, 145340, 146185, 148780, 193414, 292370, 386828, 483535, 584740, 967070, 1257191, 1934140, 2514382, 5028764, 6285955, 12571910, 25143820]

約数ペア:

[(1, 25143820), (2, 12571910), (4, 6285955), (5, 5028764), (10, 2514382), (13, 1934140), (20, 1257191), (26, 967070), (43, 584740), (52, 483535), (65, 386828), (86, 292370), (130, 193414), (169, 148780), (172, 146185), (173, 145340), (215, 116948), (260, 96707), (338, 74390), (346, 72670), (430, 58474), (559, 44980), (676, 37195), (692, 36335), (845, 29756), (860, 29237), (865, 29068), (1118, 22490), (1690, 14878), (1730, 14534), (2236, 11245), (2249, 11180), (2795, 8996), (3380, 7439), (3460, 7267), (4498, 5590)]