31512780

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{67}}^2$

素因数の和:165

約数の個数: 144

約数和(自身を含む): 107180640

約数和(自身を除く): 75667860

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 27, 30, 36, 39, 45, 52, 54, 60, 65, 67, 78, 90, 108, 117, 130, 134, 135, 156, 180, 195, 201, 234, 260, 268, 270, 335, 351, 390, 402, 468, 540, 585, 603, 670, 702, 780, 804, 871, 1005, 1170, 1206, 1340, 1404, 1742, 1755, 1809, 2010, 2340, 2412, 2613, 3015, 3484, 3510, 3618, 4020, 4355, 4489, 5226, 6030, 7020, 7236, 7839, 8710, 8978, 9045, 10452, 12060, 13065, 13467, 15678, 17420, 17956, 18090, 22445, 23517, 26130, 26934, 31356, 36180, 39195, 40401, 44890, 47034, 52260, 53868, 58357, 67335, 78390, 80802, 89780, 94068, 116714, 117585, 121203, 134670, 156780, 161604, 175071, 202005, 233428, 235170, 242406, 269340, 291785, 350142, 404010, 470340, 484812, 525213, 583570, 606015, 700284, 808020, 875355, 1050426, 1167140, 1212030, 1575639, 1750710, 2100852, 2424060, 2626065, 3151278, 3501420, 5252130, 6302556, 7878195, 10504260, 15756390, 31512780]

約数ペア:

[(1, 31512780), (2, 15756390), (3, 10504260), (4, 7878195), (5, 6302556), (6, 5252130), (9, 3501420), (10, 3151278), (12, 2626065), (13, 2424060), (15, 2100852), (18, 1750710), (20, 1575639), (26, 1212030), (27, 1167140), (30, 1050426), (36, 875355), (39, 808020), (45, 700284), (52, 606015), (54, 583570), (60, 525213), (65, 484812), (67, 470340), (78, 404010), (90, 350142), (108, 291785), (117, 269340), (130, 242406), (134, 235170), (135, 233428), (156, 202005), (180, 175071), (195, 161604), (201, 156780), (234, 134670), (260, 121203), (268, 117585), (270, 116714), (335, 94068), (351, 89780), (390, 80802), (402, 78390), (468, 67335), (540, 58357), (585, 53868), (603, 52260), (670, 47034), (702, 44890), (780, 40401), (804, 39195), (871, 36180), (1005, 31356), (1170, 26934), (1206, 26130), (1340, 23517), (1404, 22445), (1742, 18090), (1755, 17956), (1809, 17420), (2010, 15678), (2340, 13467), (2412, 13065), (2613, 12060), (3015, 10452), (3484, 9045), (3510, 8978), (3618, 8710), (4020, 7839), (4355, 7236), (4489, 7020), (5226, 6030)]